Revert D23966878: [pytorch][PR] This PR flips a switch to enable PE + TE
Test Plan: revert-hammer
Differential Revision:
D23966878 (https://github.com/pytorch/pytorch/commit/dddb685c114a94df01a1919c7238f331fa63fc6d)
Original commit changeset: 2010a0b07c59
fbshipit-source-id: 132556039730fd3e4babd0d7ca8daf9c8d14f728
