Issue #3447307 by longwave, catch, quietone: Remove remaining deprecated code from Drupal 11

core/tests/Drupal/FunctionalJavascriptTests/AjaxWaitTest.php

core/tests/Drupal/FunctionalJavascriptTests/JSWebAssert.php

...ts/Drupal/FunctionalJavascriptTests/WebDriverTestBase.php

core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php

core/tests/Drupal/Tests/BrowserTestBase.php

core/tests/Drupal/Tests/Core/Test/BrowserTestBaseTest.php

core/tests/Drupal/Tests/Core/Test/WebDriverTestBaseTest.php

core/tests/Drupal/Tests/PerformanceTestTrait.php

core/tests/Drupal/Tests/UnitTestCase.php

core/tests/Drupal/Tests/UnitTestCaseTest.php