Revert "SetVariable in dynamo (#103205)"
This reverts commit 82fb5edfc725714d6ccb3cb978a42d29b4c34cc2.
Reverted https://github.com/pytorch/pytorch/pull/103205 on behalf of https://github.com/atalman due to Failing cuda11.8-py3.10-gcc7-sm86 / test (inductor_torchbench_dynamic) with CUDA oom ([comment](https://github.com/pytorch/pytorch/pull/103205#issuecomment-1638115073))
