Revert "[inductor] Lower masked_scatter on CUDA (#108803)"
This reverts commit e4036ed7068cdcbe07470c1740ca25ab8ead7a3b.
Reverted https://github.com/pytorch/pytorch/pull/108803 on behalf of https://github.com/peterbell10 due to Bot merged after aborted rebase ([comment](https://github.com/pytorch/pytorch/pull/108803#issuecomment-1719918831))
