api.module should notice deleted files/functions

Migrated issue

Reported by: webchick

Legacy.inc was removed from Drupal HEAD some 2 weeks ago, yet still shows up on DrupalDocs.org, and specifically here: http://drupaldocs.org/api/head/group/form

This is causing massive confusion for new developers who keep thinking they can use those form_* functions in HEAD and they really, really can't.

I have no idea how to fix this though. :( Anyone with access who can check and see if the CVS DrupalDocs.org is checking against is out of date?