pytorch

af885374 - Back out "Add autograd hook for python rpc call"

Back out "Add autograd hook for python rpc call" Summary: Original commit changeset: 070324c57312 Test Plan: revert Reviewed By: pritamdamania87 Differential Revision: D18011308 fbshipit-source-id: 4185e4c6f51c1d11b23b8ab44e6e958b09f27c53