Summary: This check is causing some issues in github commits. Figuring out exactly which versions of 4.9 have the bug is a pain, so let's just get rid of it. See D6695110 for more context.

Reviewed By: yfeldblum

Differential Revision: D7431713

fbshipit-source-id: 17d1b025edf52592495c5f69c5a15025b33b3895