Issue #2916294 by dawehner: JS codestyle: no-useless-escape

core/.eslintrc.passing.json

core/misc/tableresponsive.es6.js

core/misc/tableresponsive.js

core/modules/ckeditor/js/ckeditor.admin.es6.js

core/modules/locale/locale.bulk.es6.js

core/modules/locale/locale.bulk.js

core/modules/quickedit/js/editors/formEditor.es6.js

core/modules/quickedit/js/editors/formEditor.js

core/modules/quickedit/js/views/EditorView.es6.js

core/modules/quickedit/js/views/EditorView.js

core/modules/quickedit/js/views/FieldToolbarView.es6.js

core/modules/quickedit/js/views/FieldToolbarView.js

core/modules/tour/js/tour.es6.js

core/modules/tour/js/tour.js