Revert "[JIT] Add is_aliasing method to FunctionSchema (#81916)"
This reverts commit eb2ea9a5818e04daddd99664bbe2c9015ffae5ed.
Reverted https://github.com/pytorch/pytorch/pull/81916 on behalf of https://github.com/osalpekar due to Need to revert this to revert https://github.com/pytorch/pytorch/pull/81836 cleanly. That PR broke internal mobile custom_ops
