Revert "[dynamo] Treat monkey patched .forward as dynamic (#107104)"
This reverts commit 79b3a9f94537677f9079915001c88bb0745c1e52.
Reverted https://github.com/pytorch/pytorch/pull/107104 on behalf of https://github.com/ZainRizvi due to Breaking internal builds ([comment](https://github.com/pytorch/pytorch/pull/107104#issuecomment-1692072018))
