Revert "Add test to check that COW inputs are not materialized (#119507)"
This reverts commit 2ebf2c88baa4667d55eda92f4c8424db505af781.
Reverted https://github.com/pytorch/pytorch/pull/119507 on behalf of https://github.com/izaitsevfb due to breaks xla jobs ([comment](https://github.com/pytorch/pytorch/pull/119507#issuecomment-1970022840))
