Revert "[dynamo] Error when user nests FX with dynamo (#87797)"
This reverts commit a485528a7e4551461d57db3deb8b40c2acea08d2.
Reverted https://github.com/pytorch/pytorch/pull/87797 on behalf of https://github.com/kit1980 due to Broke linux-bionic-py3.7-clang9 / test (dynamo, 2, 2, linux.2xlarge), same error on pull
