Revert "Fakify leaf of FunctionalTensor (#107062)"
This reverts commit 6cb0128c8a07d626ab84516df3c9727943469d49.
Reverted https://github.com/pytorch/pytorch/pull/107062 on behalf of https://github.com/ZainRizvi due to This appears to have broken the test TestDTensorCompile.test_dtensor_fullgraph. Probably a land race ([comment](https://github.com/pytorch/pytorch/pull/107062#issuecomment-1684124230))
