Test plan:
* The hook code should be removed from both the `extension.json` call, and from the Hooks PHP file itself.
* The number of QUnit tests run before and after should be the same
* The QUnit tests should still pass. :-)
# Wikimedia-deployed
[ ] AdvancedSearch
[ ] CentralAuth – https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/CentralAuth/+/490495
[ ] CodeMirror
[ ] ContentTranslation
[ ] EventLogging – https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/EventLogging/+/490490
[ ] MobileFrontend – https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/MobileFrontend/+/490491
[ ] MultimediaViewer – https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/MultimediaViewer/+/490494
[x] NavigationTiming – https://gerrit.wikimedia.org/r/485981
[ ] PerformanceInspector
[ ] QuickSurveys
[ ] RelatedArticles
[ ] RevisionSlider
[ ] Sentry
[ ] TemplateData
[ ] TemplateWizard
[ ] Thanks
[ ] TwoColConflict
[ ] UniversalLanguageSelector – https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/UniversalLanguageSelector/+/490488
[x] VisualEditor – https://gerrit.wikimedia.org/r/485328
[ ] WikibaseLexeme
[ ] WikidataPageBanner
[ ] WikiEditor – https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/WikiEditor/+/490489
[ ] ZeroBanner
[ ] MinervaNeue (the skin)
# Non-static (has a dependency), so not yet
[ ] Cite
[ ] Citoid
[ ] Graph
[ ] GuidedTour
# Non-static (dynamic test file / dependency finding, ¡¿why?!), so not yet
[ ] CentralNotice
[ ] Echo
[ ] Flow
[ ] UploadWizard
# Not yet on extension.json, so not yet
[ ] Translate (on extension.json but waiting for compatibility to lapse)
[ ] Wikibase
# Extensions not deployed at Wikimedia
[ ] examples
[ ] BlueSpiceExtendedSearch
[ ] FormWizard
[ ] ImageMetrics
[ ] SemanticMediaWiki
[ ] SemanticResultFormats
[ ] Wikispeech