Revert "Update scatter_reduce_ test with parallel backend check (#118708)"
This reverts commit d670dfb7ae0a88cf010455301eb1d0ef91950f1a.
Reverted https://github.com/pytorch/pytorch/pull/118708 on behalf of https://github.com/leslie-fang-intel due to Test Case still fail ([comment](https://github.com/pytorch/pytorch/pull/118708#issuecomment-1928767568))
