diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 22526bac8fd230bf18c13ecccef2bf9a7d36628d..1308f2cb383a9e87dc8c371425d98ca2aace973e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -313,79 +313,6 @@ default:
 # Lint Jobs
 ################
 
-
-'Lint cache warming':
-  <<: [ *default-job-settings-lint ]
-  stage: 🪄 Lint
-  rules:
-    - if: $CI_PIPELINE_SOURCE == "push" && $CI_PROJECT_ROOT_NAMESPACE == "project"
-    - if: $CI_PIPELINE_SOURCE == "schedule" && $CI_PROJECT_ROOT_NAMESPACE == "project" && $DAILY_TEST == "1"
-    - when: manual
-      allow_failure: true
-  variables:
-    KUBERNETES_CPU_REQUEST: "4"
-  script:
-    - *prepare-lint-directory
-    - *phpstan-cache
-    - *cspell-cache
-    - *eslint-cache
-    - *stylelint-cache
-    - composer install
-    - vendor/bin/phpstan --version
-    - php vendor/bin/phpstan -vvv analyze --configuration=./core/phpstan.neon.dist
-    - *core-spellcheck
-    - yarn run lint:core-js-passing --cache --cache-strategy content
-    - yarn run build:css --check
-    - yarn run lint:css --cache --cache-location .stylelintcache --cache-strategy content
-    - mv -f /build/core/phpstan-tmp $CI_PROJECT_DIR/core
-    - mv -f /build/core/.cspellcache $CI_PROJECT_DIR/core
-    - mv -f  /build/core/.eslintcache $CI_PROJECT_DIR/core
-    - mv -f  /build/core/.stylelintcache $CI_PROJECT_DIR/core
-  artifacts:
-    paths:
-      - core/phpstan-tmp/resultCache.php
-      - core/.cspellcache
-      - core/.eslintcache
-      - core/.stylelintcache
-
-'🧹 PHP Static Analysis (phpstan)':
-  <<: [ *default-job-settings-lint ]
-  stage: 🪄 Lint
-  variables:
-    KUBERNETES_CPU_REQUEST: "4"
-  script:
-    - *prepare-lint-directory
-    - *phpstan-cache
-    - composer validate
-    - composer install --optimize-autoloader
-    - if [ -n "$COMPOSER_UPDATE" ]; then
-        composer update --optimize-autoloader;
-        composer outdated;
-      fi
-    - vendor/bin/phpstan --version
-    # Rely on PHPStan caching to execute analysis multiple times without performance drawback.
-    # Output a copy in junit.
-    - php vendor/bin/phpstan -vvv analyze --configuration=./core/phpstan.neon.dist --error-format=gitlab > $CI_PROJECT_DIR/phpstan-quality-report.json || EXIT_CODE=$?
-    - php vendor/bin/phpstan -vvv analyze --configuration=./core/phpstan.neon.dist --no-progress --error-format=junit > $CI_PROJECT_DIR/phpstan-junit.xml || true
-    - |
-      if [ -n "$EXIT_CODE" ]; then
-        # Output a copy in plain text for human logs.
-        php vendor/bin/phpstan analyze --configuration=./core/phpstan.neon.dist --no-progress || true
-        # Generate a new baseline.
-        echo "Generating an PHPStan baseline file (available as job artifact)."
-        php vendor/bin/phpstan analyze --configuration=./core/phpstan.neon.dist --no-progress --generate-baseline=$CI_PROJECT_DIR/core/.phpstan-baseline.php || true
-        exit $EXIT_CODE
-      fi
-
-  artifacts:
-    # Only store the baseline if the job fails.
-    when: on_failure
-    reports:
-      codequality: phpstan-quality-report.json
-      junit: phpstan-junit.xml
-    paths:
-      - core/.phpstan-baseline.php
-
 '🧹 PHP Coding standards (PHPCS)':
   <<: [ *default-job-settings-lint ]
   stage: 🪄 Lint
@@ -394,10 +321,6 @@ default:
   script:
     - composer validate
     - composer install --optimize-autoloader
-    - if [ -n "$COMPOSER_UPDATE" ]; then
-        composer update --optimize-autoloader;
-        composer outdated;
-      fi
     - vendor/bin/phpcs --version
     - composer phpcs -- -s --report-full --report-summary --report-\\Micheh\\PhpCodeSniffer\\Report\\Gitlab=phpcs-quality-report.json
   artifacts:
@@ -407,146 +330,3 @@ default:
       - vendor/
     reports:
       codequality: phpcs-quality-report.json
-
-'🧹 JavaScript linting (eslint)':
-  stage: 🪄 Lint
-  variables:
-    KUBERNETES_CPU_REQUEST: "2"
-  # Run on push, or on MRs if CSS files have changed, or manually.
-  rules:
-    - if: $CI_PIPELINE_SOURCE == "push" && $CI_PROJECT_ROOT_NAMESPACE == "project"
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
-      changes:
-        - core/.eslint*
-        - core/.prettier*
-        - core/package.json
-        - core/yarn.lock
-        - "**/*.js"
-        - "**/*.yml"
-    - when: manual
-      allow_failure: true
-  script:
-    - *prepare-lint-directory
-    - *eslint-cache
-    - cd core
-    - corepack enable
-    - yarn install
-    - yarn run check:ckeditor5
-    - yarn run lint:core-js-passing --cache --cache-strategy content --format gitlab
-  artifacts:
-    reports:
-      codequality: eslint-quality-report.json
-
-'🧹 CSS linting (stylelint)':
-  stage: 🪄 Lint
-  variables:
-    KUBERNETES_CPU_REQUEST: "2"
-  # Run on push, or on MRs if CSS files have changed, or manually.
-  rules:
-    - if: $CI_PIPELINE_SOURCE == "push" && $CI_PROJECT_ROOT_NAMESPACE == "project"
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
-      changes:
-        - core/.stylelintrc.json
-        - core/.prettier*
-        - core/package.json
-        - core/yarn.lock
-        - "**/*.css"
-    - when: manual
-      allow_failure: true
-  script:
-    - *prepare-lint-directory
-    - *stylelint-cache
-    - corepack enable
-    - cd core
-    - yarn install
-    - yarn run build:css --check
-    - yarn run lint:css --cache --cache-location .stylelintcache --cache-strategy content --color  --custom-formatter=@gitlab-formatters/stylelint-formatter-gitlab --output-file=$CI_PROJECT_DIR/gl-codequality.json
-  artifacts:
-    reports:
-      codequality: gl-codequality.json
-
-'📔 Spell-checking':
-  <<: [ *default-job-settings-lint ]
-  stage: 🪄 Lint
-  variables:
-    KUBERNETES_CPU_REQUEST: "2"
-  script:
-    - *prepare-lint-directory
-    - *cspell-cache
-    - *core-spellcheck
-    - mv -f /build/core/package.json $CI_PROJECT_DIR/core/package.json
-    - mv -f /build/core/yarn.lock $CI_PROJECT_DIR/core/yarn.lock
-    - mv /build/core/node_modules $CI_PROJECT_DIR/core
-  cache:
-    key:
-      files:
-        - ./core/package.json
-        - ./core/yarn.lock
-    paths:
-      - ./core/node_modules
-  artifacts:
-    expire_in: 1 week
-    expose_as: 'yarn-vendor'
-    paths:
-      - core/node_modules/
-
-'📔 Validatable config':
-  <<: [ *default-job-settings-lint ]
-  stage: 🪄 Lint
-  variables:
-    KUBERNETES_CPU_REQUEST: "2"
-    _TARGET_PHP: "8.3-ubuntu"
-  # Run on MRs if config schema files have changed, or manually.
-  rules:
-    - if: $PERFORMANCE_TEST != "1"
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
-      changes:
-        - "**/config/schema/*.schema.yml"
-        # Modules may alter config schema using hook_config_schema_info_alter().
-        - "**/*.module"
-    - when: manual
-      allow_failure: true
-  artifacts:
-    expire_in: 1 week
-    expose_as: 'validatable-config'
-    paths:
-      - HEAD.json
-      - MR.json
-  # This job must pass, but must also not disrupt Drupal core's CI if dependencies are not core-compatible.
-  allow_failure:
-    exit_codes:
-      # `composer require …` fails (implies no version available compatible with Drupal core)
-      - 100
-      # `drush pm:install config_inspector …` fails (implies failure during module installation)
-      - 101
-      # Temporarily allow this to fail as there's are bugs with adding/removing/modifying config schemas.
-      - 1
-  script:
-    # Revert back to the tip of the branch this MR started from.
-    - git checkout -f $CI_MERGE_REQUEST_DIFF_BASE_SHA
-    # Composer-install Drush & the Config Inspector module.
-    - composer require drush/drush drupal/config_inspector || exit 100
-    # Install Drupal's Standard install profile + all core modules (except obsolete ones) + the config inspector module.
-    - php core/scripts/drupal install standard
-    - ls core/modules | grep -v sdc | xargs vendor/bin/drush pm:install --yes
-    - vendor/bin/drush pm:install config_inspector --yes --quiet || exit 101
-    # Compute statistics for coverage of validatable config for HEAD.
-    - vendor/bin/drush config:inspect --statistics > HEAD.json
-    # Return to the MR commit being tested, conditionally install updates, always rebuild the container.
-    - git checkout -f $CI_COMMIT_SHA
-    - git diff $CI_MERGE_REQUEST_DIFF_BASE_SHA $CI_COMMIT_SHA --name-only | grep -q '.install$\|.post_update\.php$' && echo '🤖 Installing DB updates…' && vendor/bin/drush updatedb --yes --quiet
-    - vendor/bin/drush cr --quiet
-    # Compute statistics for coverage of validatable config for MR.
-    - vendor/bin/drush config:inspect --statistics > MR.json
-    # Output diff, but never fail the job.
-    - diff -u HEAD.json MR.json || true
-    # Determine if this increased or decreased coverage. Fail the job if it is worse. All the
-    # percentages must be equal or higher, with the exception of `typesInUse`.
-    - |
-      php -r '
-         $head = json_decode(file_get_contents("HEAD.json"), TRUE)["assessment"];
-         $mr = json_decode(file_get_contents("MR.json"), TRUE)["assessment"];
-         unset($head["_description"], $head["typesInUse"], $mr["_description"], $mr["typesInUse"]);
-         $impact = array_map(fn (float $h, float $m) => $m-$h, $head, $mr);
-         exit((int) (min($impact) < 0));
-      '
diff --git a/.gitlab-ci/pipeline.yml b/.gitlab-ci/pipeline.yml
index 14fc2e5e9b7e3d31965aff551b488fdbc6ad59ef..e39471024ee428bf3be01d6636fd3f1a0c137422 100644
--- a/.gitlab-ci/pipeline.yml
+++ b/.gitlab-ci/pipeline.yml
@@ -105,16 +105,7 @@ variables:
 
 .run-repeat-class-test: &run-repeat-class-test
   script:
-    - echo "ℹ️ Running class ${REPEAT_TEST_CLASS}"
-    - |
-      if [[ $REPEAT_TEST_CLASS == "Drupal\Tests\Change\Me" ]]; then
-        echo '❗ You need to change the REPEAT_TEST_CLASS variable to an existing class before running the job.'
-        echo '   You just need to click on the job that you want to run (do not press the play button straight away) and then set the following:'
-        echo '   "Key" to "REPEAT_TEST_CLASS" and "Value" to "Drupal\Tests\ckeditor5\FunctionalJavascript\MediaLinkabilityTest"';
-        exit 1;
-      else
-        sudo MINK_DRIVER_ARGS_WEBDRIVER="$MINK_DRIVER_ARGS_WEBDRIVER" -u www-data php ./core/scripts/run-tests.sh --color --keep-results --concurrency "$CONCURRENCY" --repeat "100" --sqlite "./sites/default/files/tests.sqlite" --dburl $SIMPLETEST_DB --url $SIMPLETEST_BASE_URL --verbose --non-html --class $REPEAT_TEST_CLASS
-      fi
+    - sudo MINK_DRIVER_ARGS_WEBDRIVER="$MINK_DRIVER_ARGS_WEBDRIVER" -u www-data php ./core/scripts/run-tests.sh --color --keep-results --concurrency "$CONCURRENCY" --repeat "7500" --sqlite "./sites/default/files/tests.sqlite" --dburl $SIMPLETEST_DB --url $SIMPLETEST_BASE_URL --verbose --non-html --class "\Drupal\Tests\layout_builder\Functional\LayoutSectionTest"
 
 ################
 # Jobs
@@ -126,185 +117,9 @@ variables:
 # Documentation: https://docs.gitlab.com/ee/ci/jobs/
 ################
 
-'🩹 Test-only changes':
-  <<: [ *with-composer, *default-job-settings ]
-  when: manual
-  allow_failure: true
-  services:
-    - <<: *with-database
-    - <<: *with-chrome
-  script:
-    - $CI_PROJECT_DIR/.gitlab-ci/scripts/test-only.sh
-
-'🖱️️️ PHPUnit Functional Javascript':
-  <<: [ *with-composer, *run-tests, *default-job-settings ]
-  parallel: 3
-  variables:
-    TESTSUITE: PHPUnit-FunctionalJavascript
-    CONCURRENCY: 5
-    KUBERNETES_CPU_REQUEST: "16"
-  services:
-    - <<: *with-database
-    - <<: *with-selenium-chrome
-  after_script:
-    - echo $MINK_DRIVER_ARGS_WEBDRIVER
-    - sed -i "s#$CI_PROJECT_DIR/##" ./sites/default/files/simpletest/phpunit-*.xml || true
-    - cp /builds/chromedriver.log ./
-
-'🖱️️️ PHPUnit Functional Javascript (non W3C legacy)':
-  <<: [ *with-composer, *default-job-settings ]
-  parallel: 1
-  variables:
-    TESTSUITE: PHPUnit-FunctionalJavascript
-    CONCURRENCY: 6
-    KUBERNETES_CPU_REQUEST: "16"
-    MINK_DRIVER_ARGS_WEBDRIVER: $MINK_DRIVER_ARGS_WEBDRIVER_CHROMEDRIVER_NON_W3C
-  services:
-    - <<: *with-database
-    - <<: *with-chrome
-  script:
-    # Run a small subset of tests to prove non W3C testing still works.
-    - sudo MINK_DRIVER_ARGS_WEBDRIVER="$MINK_DRIVER_ARGS_WEBDRIVER" -u www-data php ./core/scripts/run-tests.sh --color --keep-results --types "$TESTSUITE" --concurrency "$CONCURRENCY" --repeat "1" --sqlite "./sites/default/files/tests.sqlite" --dburl $SIMPLETEST_DB --url $SIMPLETEST_BASE_URL --verbose --non-html javascript
-
-  after_script:
-    - sed -i "s#$CI_PROJECT_DIR/##" ./sites/default/files/simpletest/phpunit-*.xml || true
-    - cp /builds/chromedriver.log ./
-
-'🌐️️ PHPUnit Functional':
-  <<: [ *with-composer, *run-tests, *default-job-settings ]
-  parallel: 8
-  variables:
-    TESTSUITE: PHPUnit-Functional
-    CONCURRENCY: "5"
-    KUBERNETES_CPU_REQUEST: "16"
-  services:
-    - <<: *with-database
-
-'⚙️️ PHPUnit Kernel':
-  <<: [ *with-composer, *run-tests, *default-job-settings ]
-  parallel: 5
-  variables:
-    TESTSUITE: PHPUnit-Kernel
-    KUBERNETES_CPU_REQUEST: "8"
-    CONCURRENCY: 12
-  services:
-    - <<: *with-database
-
-'👷️️️ PHPUnit Build':
-  <<: [ *with-composer, *run-tests, *default-job-settings ]
-  variables:
-    TESTSUITE: PHPUnit-Build
-    KUBERNETES_CPU_REQUEST: "8"
-    CONCURRENCY: "5"
-  services:
-    - <<: *with-database
-
-'⚡️ PHPUnit Unit':
-  <<: [ *with-composer, *run-tests, *default-job-settings ]
-  variables:
-    TESTSUITE: PHPUnit-Unit
-    KUBERNETES_CPU_REQUEST: "1"
-    CONCURRENCY: 6
-
-'✅️ PHPStan Tests':
-  <<: [ *default-job-settings ]
-  variables:
-    KUBERNETES_CPU_REQUEST: "2"
-  # Run if PHPStan files have changed, or manually.
-  rules:
-    - if: $CI_PIPELINE_SOURCE == "parent_pipeline" && $PERFORMANCE_TEST != "1"
-      changes:
-        - core/tests/PHPStan/*
-        - composer/Metapackage/PinnedDevDependencies/composer.json
-    - when: manual
-      allow_failure: true
-  # Default job settings runs a script that expects vendor to exist.
-  before_script: []
-  script:
-    - docker-php-ext-enable pcov
-    - cd core/tests/PHPStan
-    - composer install
-    - vendor/bin/phpunit tests --testdox --coverage-text --colors=never --coverage-cobertura=coverage.cobertura.xml --log-junit junit.xml
-  # Default job settings runs a script that junit files in a specific location..
-  after_script: []
-  artifacts:
-    when: always
-    reports:
-      junit: core/tests/PHPStan/junit.xml
-      coverage_report:
-        coverage_format: cobertura
-        path: core/tests/PHPStan/coverage.cobertura.xml
-
-'🦉️️️ Nightwatch':
-  <<: [ *with-composer-and-yarn, *default-job-settings ]
-  variables:
-    KUBERNETES_CPU_REQUEST: "16"
-  services:
-    - <<: *with-database
-    - <<: *with-selenium-chrome
-  script:
-    - export DRUPAL_TEST_DB_URL=$SIMPLETEST_DB
-    - cp ./core/.env.example ./core/.env
-    # dotenv-safe/config does not support environment variables
-    # @see https://github.com/rolodato/dotenv-safe/issues/126
-    # @todo move this to `variables` when the above is resolved
-    - echo "DRUPAL_TEST_BASE_URL='http://localhost/subdirectory'" >> ./core/.env
-    - echo "DRUPAL_TEST_CHROMEDRIVER_AUTOSTART=false" >> ./core/.env
-    - echo "DRUPAL_TEST_DB_URL='${DRUPAL_TEST_DB_URL}'" >> ./core/.env
-    - echo "DRUPAL_TEST_WEBDRIVER_HOSTNAME='selenium'" >> ./core/.env
-    - echo "DRUPAL_TEST_WEBDRIVER_CHROME_ARGS='--disable-dev-shm-usage --disable-gpu --headless --dns-prefetch-disable'" >> ./core/.env
-    - echo "DRUPAL_TEST_WEBDRIVER_W3C=true" >> ./core/.env
-    - echo "DRUPAL_TEST_WEBDRIVER_PORT='4444'" >> ./core/.env
-    - echo "DRUPAL_NIGHTWATCH_OUTPUT='"../nightwatch_output"'" >> ./core/.env
-    - echo "COLUMNS=1000" >> ./core/.env
-    - chown -R www-data:www-data ./sites /var/www
-    - cd core
-    - corepack enable
-    - sudo -u www-data yarn run test:nightwatch --workers=3
-  after_script:
-    - cp /builds/chromedriver.log ./
-  artifacts:
-    when: always
-    expire_in: 6 mos
-    reports:
-      junit: ./nightwatch_output/**/*.xml
-    paths:
-      - ./nightwatch_output
-      - '*.log'
-
 '🔁 Repeat Class Test':
   <<: [ *with-composer, *run-repeat-class-test, *default-job-settings ]
-  when: manual
-  allow_failure: true
-  variables:
-    REPEAT_TEST_CLASS: 'Drupal\Tests\Change\Me'
-  services:
-    - <<: *with-database
-
-'🚲 Performance tests':
-  <<: [ *default-job-settings ]
-  rules:
-    - if: $PERFORMANCE_TEST == "1"
-    - when: manual
-      allow_failure: true
-  variables:
-    KUBERNETES_CPU_REQUEST: "24"
-    MINK_DRIVER_ARGS_WEBDRIVER: '["chrome", {"browserName":"chrome","goog:chromeOptions":{"args":["--disable-dev-shm-usage","--disable-gpu","--headless","--no-sandbox"]}}, "http://chrome:9515"]'
-  tags:
-    - performance-test-runner
+  when: always
+  allow_failure: false
   services:
     - <<: *with-database
-    - <<: *with-chrome
-  script:
-    #  Determine DB driver.
-    - |
-      [[ $_TARGET_DB == sqlite* ]] && export SIMPLETEST_DB=sqlite://localhost/subdirectory/sites/default/files/db.sqlite?module=sqlite
-      [[ $_TARGET_DB == mysql* ]] && export SIMPLETEST_DB=mysql://$MYSQL_USER:$MYSQL_PASSWORD@database/$MYSQL_DATABASE?module=mysql
-      [[ $_TARGET_DB == mariadb* ]] && export SIMPLETEST_DB=mysql://$MYSQL_USER:$MYSQL_PASSWORD@database/$MYSQL_DATABASE?module=mysql
-      [[ $_TARGET_DB == pgsql* ]] && export SIMPLETEST_DB=pgsql://$POSTGRES_USER:$POSTGRES_PASSWORD@database/$POSTGRES_DB?module=pgsql
-    - composer install --optimize-autoloader
-    - export OTEL_COLLECTOR="$OTEL_COLLECTOR"
-    - mkdir -p ./sites/simpletest ./sites/default/files ./build/logs/junit /var/www/.composer
-    - chown -R www-data:www-data ./sites ./build/logs/junit ./vendor /var/www/
-    - sudo -u www-data git config --global --add safe.directory $CI_PROJECT_DIR
-    - sudo SIMPLETEST_BASE_URL="http://$HOSTNAME/subdirectory" SIMPLETEST_DB="$SIMPLETEST_DB" MINK_DRIVER_ARGS_WEBDRIVER="$MINK_DRIVER_ARGS_WEBDRIVER" OTEL_COLLECTOR="$OTEL_COLLECTOR" -u www-data ./vendor/bin/phpunit -c core --group OpenTelemetry --log-junit=./sites/default/files/simpletest/phpunit-performance.xml
diff --git a/core/modules/layout_builder/tests/src/Functional/LayoutSectionTest.php b/core/modules/layout_builder/tests/src/Functional/LayoutSectionTest.php
index 71b44fe40d5510f1b9ab5605cd8235f879703736..100483b8f78bd013f2e5f9e23a3ed66de29a0188 100644
--- a/core/modules/layout_builder/tests/src/Functional/LayoutSectionTest.php
+++ b/core/modules/layout_builder/tests/src/Functional/LayoutSectionTest.php
@@ -58,130 +58,6 @@ protected function setUp(): void {
     ], 'foobar'));
   }
 
-  /**
-   * Provides test data for ::testLayoutSectionFormatter().
-   */
-  public static function providerTestLayoutSectionFormatter() {
-    $data = [];
-    $data['block_with_global_context'] = [
-      [
-        [
-          'section' => new Section('layout_onecol', [], [
-            'baz' => new SectionComponent('baz', 'content', [
-              'id' => 'test_context_aware',
-              'context_mapping' => [
-                'user' => '@user.current_user_context:current_user',
-              ],
-            ]),
-          ]),
-        ],
-      ],
-      [
-        '.layout--onecol',
-        '#test_context_aware--username',
-      ],
-      [
-        'foobar',
-      ],
-      'user',
-      'user:2',
-      'UNCACHEABLE (poor cacheability)',
-    ];
-    $data['block_with_entity_context'] = [
-      [
-        [
-          'section' => new Section('layout_onecol', [], [
-            'baz' => new SectionComponent('baz', 'content', [
-              'id' => 'field_block:node:bundle_with_section_field:body',
-              'context_mapping' => [
-                'entity' => 'layout_builder.entity',
-              ],
-            ]),
-          ]),
-        ],
-      ],
-      [
-        '.layout--onecol',
-        '.field--name-body',
-      ],
-      [
-        'Body',
-        'The node body',
-      ],
-      '',
-      '',
-      'MISS',
-    ];
-    $data['single_section_single_block'] = [
-      [
-        [
-          'section' => new Section('layout_onecol', [], [
-            'baz' => new SectionComponent('baz', 'content', [
-              'id' => 'system_powered_by_block',
-            ]),
-          ]),
-        ],
-      ],
-      '.layout--onecol',
-      'Powered by',
-      '',
-      '',
-      'MISS',
-    ];
-    $data['multiple_sections'] = [
-      [
-        [
-          'section' => new Section('layout_onecol', [], [
-            'baz' => new SectionComponent('baz', 'content', [
-              'id' => 'system_powered_by_block',
-            ]),
-          ]),
-        ],
-        [
-          'section' => new Section('layout_twocol', [], [
-            'foo' => new SectionComponent('foo', 'first', [
-              'id' => 'test_block_instantiation',
-              'display_message' => 'foo text',
-            ]),
-            'bar' => new SectionComponent('bar', 'second', [
-              'id' => 'test_block_instantiation',
-              'display_message' => 'bar text',
-            ]),
-          ]),
-        ],
-      ],
-      [
-        '.layout--onecol',
-        '.layout--twocol',
-      ],
-      [
-        'Powered by',
-        'foo text',
-        'bar text',
-      ],
-      'user.permissions',
-      '',
-      'MISS',
-    ];
-    return $data;
-  }
-
-  /**
-   * Tests layout_section formatter output.
-   *
-   * @dataProvider providerTestLayoutSectionFormatter
-   */
-  public function testLayoutSectionFormatter($layout_data, $expected_selector, $expected_content, $expected_cache_contexts, $expected_cache_tags, $expected_dynamic_cache): void {
-    $node = $this->createSectionNode($layout_data);
-
-    $canonical_url = $node->toUrl('canonical');
-    $this->drupalGet($canonical_url);
-    $this->assertLayoutSection($expected_selector, $expected_content, $expected_cache_contexts, $expected_cache_tags, $expected_dynamic_cache);
-
-    $this->drupalGet($canonical_url->toString() . '/layout');
-    $this->assertLayoutSection($expected_selector, $expected_content, $expected_cache_contexts, $expected_cache_tags, 'UNCACHEABLE (poor cacheability)');
-  }
-
   /**
    * Tests the access checking of the section formatter.
    */
@@ -210,78 +86,6 @@ public function testLayoutSectionFormatterAccess(): void {
     $this->assertLayoutSection('.layout--onecol', 'Hello test world', '', '', 'UNCACHEABLE (poor cacheability)');
   }
 
-  /**
-   * Ensures that the entity title is displayed.
-   */
-  public function testLayoutPageTitle(): void {
-    $this->drupalPlaceBlock('page_title_block');
-    $node = $this->createSectionNode([]);
-
-    $this->drupalGet($node->toUrl('canonical')->toString() . '/layout');
-    $this->assertSession()->titleEquals('Edit layout for The node title | Drupal');
-    $this->assertEquals('Edit layout for The node title', $this->cssSelect('h1.page-title')[0]->getText());
-  }
-
-  /**
-   * Tests that no Layout link shows without a section field.
-   */
-  public function testLayoutUrlNoSectionField(): void {
-    $node = $this->createNode([
-      'type' => 'bundle_without_section_field',
-      'title' => 'The node title',
-      'body' => [
-        [
-          'value' => 'The node body',
-        ],
-      ],
-    ]);
-    $node->save();
-
-    $this->drupalGet($node->toUrl('canonical')->toString() . '/layout');
-    $this->assertSession()->statusCodeEquals(403);
-  }
-
-  /**
-   * Tests that deleting a field removes it from the layout.
-   */
-  public function testLayoutDeletingField(): void {
-    $assert_session = $this->assertSession();
-
-    $this->drupalGet('/admin/structure/types/manage/bundle_with_section_field/display/default/layout');
-    $assert_session->statusCodeEquals(200);
-    $assert_session->elementExists('css', '.field--name-body');
-
-    // Delete the field from both bundles.
-    $this->drupalGet('/admin/structure/types/manage/bundle_without_section_field/fields/node.bundle_without_section_field.body/delete');
-    $this->submitForm([], 'Delete');
-    $this->drupalGet('/admin/structure/types/manage/bundle_with_section_field/display/default/layout');
-    $assert_session->statusCodeEquals(200);
-    $assert_session->elementExists('css', '.field--name-body');
-
-    $this->drupalGet('/admin/structure/types/manage/bundle_with_section_field/fields/node.bundle_with_section_field.body/delete');
-    $this->submitForm([], 'Delete');
-    $this->drupalGet('/admin/structure/types/manage/bundle_with_section_field/display/default/layout');
-    $assert_session->statusCodeEquals(200);
-    $assert_session->elementNotExists('css', '.field--name-body');
-  }
-
-  /**
-   * Tests that deleting a bundle removes the layout.
-   */
-  public function testLayoutDeletingBundle(): void {
-    $assert_session = $this->assertSession();
-
-    $display = LayoutBuilderEntityViewDisplay::load('node.bundle_with_section_field.default');
-    $this->assertInstanceOf(LayoutBuilderEntityViewDisplay::class, $display);
-
-    $this->drupalGet('/admin/structure/types/manage/bundle_with_section_field/delete');
-    $this->submitForm([], 'Delete');
-    $assert_session->statusCodeEquals(200);
-
-    $display = LayoutBuilderEntityViewDisplay::load('node.bundle_with_section_field.default');
-    $this->assertNull($display);
-  }
-
   /**
    * Asserts the output of a layout section.
    *