Unless there are significant reasons to keep it
around, it will be removed both
from the extensions and from the mediawiki sites fairly soon.
That query api was written to secure people who write bots from web
interface changes. Tell that "developer" who wants to remove it now,
that I'll never use _his_ "stable interfaces" any more, because I just
haven't enough time to rewrite what I was working on for weeks just
because someone "has ported that to some other interface" and wants to
delete it without backward compability. That developer really doesn't
understand what he is doing.
--
Ed