Issue #3101368 by TR: Use default drupalci.yml

# https://www.drupal.org/drupalorg/docs/drupal-ci/customizing-drupalci-testing

build:

  assessment:

    validate_codebase:

      phplint:

      container_composer:

      phpcs:

        # phpcs will use core's specified version of Coder.

        sniff-all-files: true

        halt-on-fail: false

    testing:

      run_tests.standard:

        types: 'PHPUnit-Unit,PHPUnit-Kernel,PHPUnit-Functional'

        testgroups: '--all'

        suppress-deprecations: false

      run_tests.javascript:

        concurrency: 1

        types: 'PHPUnit-FunctionalJavascript'

        testgroups: '--all'

        suppress-deprecations: false

        halt-on-fail: false