Revert D30138788: [pytorch][PR] OpInfo for `adaptive_avg_pool2d`
Test Plan: revert-hammer
Differential Revision:
D30138788 (https://github.com/pytorch/pytorch/commit/5c431981b5b36da6dba61f0e5d5101e72d2fd726)
Original commit changeset: 66735ceaa85b
fbshipit-source-id: 75eb241ef82d32d6480db069c035df0abc6753fe
