Revert "[pytorch] Accelerate indexing_backward_kernel with duplicates (#99441)"
This reverts commit 97afbcbc8007857a51c85e9c61fe6d80564ef1f9.
Reverted https://github.com/pytorch/pytorch/pull/99441 on behalf of https://github.com/ngimel due to breaks ROCM ([comment](https://github.com/pytorch/pytorch/pull/99441#issuecomment-1531804487))
