Dealiases for Better Autocomplete

The bulk update request #29664 (forum #297311) has been approved by @nonamethanks.

The bulk update request #30450 (forum #300097) has been approved by @nonamethanks.

BUR #33746 is pending approval.

remove alias pokemon_ears -> animal_ears
deprecate pokemon_ears

This is currently (and very unnecessarily) the top autocomplete result for "p".