Revert D22330340: [C2] Fixed a bug in normalization operator
Test Plan: revert-hammer
Differential Revision:
D22330340 (https://github.com/pytorch/pytorch/commit/ce63f70981e94349ae2eba0f2898e7cd0058a351)
Original commit changeset: 0bccf925bb76
fbshipit-source-id: e27d70dee0fbe9e708b0cf3be81dbd33c4015026
