Revert "[inductor] New approach for computing triton load/store masks (#89566)"
This reverts commit c6c2de586d7f6ecd6a3eb5139870824f33a1f916.
Reverted https://github.com/pytorch/pytorch/pull/89566 on behalf of https://github.com/clee2000 due to broke test_invalid_operand_issue1_cuda in inductor/test_torchinductor on https://github.com/pytorch/pytorch/actions/runs/3657444733/jobs/6181700572
