pytorch

411ccce2 - Revert D20936595: Make DispatchKeyExtractor forget about TensorOptions

Revert D20936595: Make DispatchKeyExtractor forget about TensorOptions Test Plan: revert-hammer Differential Revision: D20936595 Original commit changeset: c2f3cc567761 fbshipit-source-id: 1fcaa0484377e1580c08cd89fd0fcbdeb3f73f11