Remove broken and obsolete WikiLoveLocal::getMessages() method
Remove broken and obsolete WikiLoveLocal::getMessages() method

This returns NULL instead of Array due to the global no longer
existing as of 6e96cb0.

Change-Id: Ic89d3ee3e436a8b0d896c2362be1f408baeebd1f

wikimedia/mediawiki-extensions-WikiLove,wikimedia/mediawiki-extensions-WikiLove