Revert D31732414: Add Initial NNC Dynamic Shapes Flow
Test Plan: revert-hammer
Differential Revision:
D31732414 (https://github.com/pytorch/pytorch/commit/de4fe7a38ca7f4eef471e71b1102cc8dfe1a5dfc)
Original commit changeset: 290a94a667c2
fbshipit-source-id: 3021a1d7a8661967e37d4f9cfc86ed47cc4a7f3d
