This reverts commit 76551ed4a7.
Reason for revert: It seems it's breaking Serbian editing Wikidata
Bug: T217770
Bug: T121747
Change-Id: If69156400ff665a8c488a24f70d6a100e26761da
When mw.uls.getFrequentLanguageList() is requested sometimes
the language that is a redirect returned causing other codebases (like Wikibase)
to show an invalid language to the user.
Bug: T217770
Change-Id: I49c802d584081aa5992dd0ba76144059bcac56c8