Revert D32650384: OpInfos for torch.{flatten, column_stack}
Test Plan: revert-hammer
Differential Revision:
D32650384 (https://github.com/pytorch/pytorch/commit/aceb46e4ce6420deaf203b6077449867725a957e)
Original commit changeset: 9ead83b378d0
fbshipit-source-id: 3ef281e536b1f21a6f13c6c51309021cf92b53b2
