Removing JavaApiUsedByMainlineModule ErrorProne check, since the data it produces is no longer being used by Mainline-EngProd or Mainline teams.

This will only be submitted once all references to the checker are removed (i.e. once the topic "colefaust_remove_java_api_finder" is submitted)

Bug: b/260268418
Change-Id: Ie79108ea0cfaa629f7f43f090eb4ecd693d344b4