Revert D28387767: Add forward AD test for op info
Test Plan: revert-hammer
Differential Revision:
D28387767 (https://github.com/pytorch/pytorch/commit/26b6d044cd1baac5cd947edc0777d99cf492f5bf)
Original commit changeset: 369d76921c84
fbshipit-source-id: 91ac961339bdd5e1e2530d2655364f9fe46cdafb
