pytorch

20f7e62b - Revert D21337640: [pytorch][PR] Split up documentation into subpages and clean up some warnings

Revert D21337640: [pytorch][PR] Split up documentation into subpages and clean up some warnings Test Plan: revert-hammer Differential Revision: D21337640 Original commit changeset: d4ad198780c3 fbshipit-source-id: fa9ba6ac542173a50bdb45bfa12f3fec0ed704fb