Revert D27582224: [pytorch][PR] Automated submodule update: FBGEMM
Test Plan: revert-hammer
Differential Revision:
D27582224 (https://github.com/pytorch/pytorch/commit/54469e157bfe12e7e834d4eb36d5ae71ba24dc89)
Original commit changeset: 6670e96b21d8
fbshipit-source-id: fbc6ab0d35ff6168cb341477e7e86169ab1a43bf
