Revert D30752939: [pytorch][PR] nvfuser update
Test Plan: revert-hammer
Differential Revision:
D30752939 (https://github.com/pytorch/pytorch/commit/cfaecaf40bd6cabd3f4e0ef0d8c7252655349b61)
Original commit changeset: ce122e80f01b
fbshipit-source-id: 57685df8f9946032a06eff1de8a3d1498500d2d2
