Thanks Antoine.

Do you have a good way for searching third party projects?  I searched on Github and I'm getting a lot of references to the CPython filenames.  I don't know how to check if anyone is making calls to the function.  But, maybe that's the point and it can't be removed if there's a chance that anyone uses it?  Thanks!

This is what I tried on Github:
PyGen_NeedsFinalizing -filename:ceval -filename:genobject -filename:gcmodule