tests: minor cleanup (#35138)

* tests: minor cleanup

* tests: use the util noop function

js/tests/unit/jquery.spec.js

@@ -1,4 +1,5 @@
 /* eslint-env jquery */
+
 import Alert from '../../src/alert'
 import Button from '../../src/button'
 import Carousel from '../../src/carousel'
@@ -11,8 +12,6 @@ import ScrollSpy from '../../src/scrollspy'
 import Tab from '../../src/tab'
 import Toast from '../../src/toast'
 import Tooltip from '../../src/tooltip'
-
-/** Test helpers */
 import { getFixture, clearFixture } from '../helpers/fixture'
 
 describe('jQuery', () => {