Issue #2349851 by targoo: Remove uses of the deprecated drupalGetSettings.

core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php

core/modules/comment/src/Tests/CommentCSSTest.php

core/modules/editor/src/Tests/EditorLoadingTest.php

core/modules/history/src/Tests/HistoryTest.php

core/modules/language/src/Tests/LanguageSwitchingTest.php

core/modules/quickedit/src/Tests/QuickEditLoadingTest.php

core/modules/system/src/Tests/Ajax/FrameworkTest.php

core/modules/toolbar/src/Tests/ToolbarAdminMenuTest.php