As per https://gerrit.wikimedia.org/g/mediawiki/core/+/master/docs/hooks.txt
229 Hooks::run() was added in MediaWiki 1.18, before that the global function 230 wfRunHooks must be used, which was deprecated in MediaWiki 1.25.
wfRunHooks has deprecated since MediaWiki 1.25, So removing it from MediaWiki extension and core is good.
Search in gerrit extensions: https://codesearch.wmflabs.org/search/?q=wfRunHooks&i=nope&files=&repos= [Ignore the .patch file]