Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  6662396b7e79bcd675aec74a341155c9597ad35c

Remove unused error messages from RepoApiError

I couldn't find any usage of these error codes in our codebase or in core.

Change-Id: Ic8113edb3bc0b6cfa63103a6fb966be5143ad361