Revert "Make allreduce compatible with fx ProxyTensor (#84126)"
This reverts commit ec5b83f76847584013a9cd4177d389a408033614.
Reverted https://github.com/pytorch/pytorch/pull/84126 on behalf of https://github.com/malfet due to Likely broke multigpu periodic jobs, see https://github.com/pytorch/pytorch/runs/8044611438?check_suite_focus=true
