Revert "Fixed type promotion semantics for native_batch_norm and native_layer_norm (#77407)"
This reverts commit 70d80fb42480f4df7bd369f8f9f1500b58c5c603.
Reverted https://github.com/pytorch/pytorch/pull/77407 on behalf of https://github.com/malfet due to as it broke meta tests ( I guess due to landrace), see https://hud.pytorch.org/pytorch/pytorch/commit/70d80fb42480f4df7bd369f8f9f1500b58c5c603
