Revert "create mergability check (#105086)"
This reverts commit 0a20233e5bf495d06bb0c47e671cdcbbaede7b79.
Reverted https://github.com/pytorch/pytorch/pull/105086 on behalf of https://github.com/PaliC due to no longer needed ([comment](https://github.com/pytorch/pytorch/pull/105086#issuecomment-1638436771))
