pytorch

93a96922 - Revert "add BFloat16 support for BatchNorm on CPU"

Revert "add BFloat16 support for BatchNorm on CPU" This reverts commit 7c8911ca7a88b4db1ff03d9871603b5aaa8c965a. Reverted https://github.com/pytorch/pytorch/pull/74410 on behalf of https://github.com/albanD