Remove beta bar from layout plugin
Remove beta bar from layout plugin

Summary: I though I already did this, when releasing it. Apparently not.

Reviewed By: jknoxville

Differential Revision: D14854810

fbshipit-source-id: 4da61866925e06a415bfaed0f48e5434e769ec39

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper