Revert "[quant][pt2e][xnnpack_quantizer] Add support for mul and mul_relu (#107930)"
This reverts commit 1d1739dc6d7365c28719cd0175081f9d9aab0324.
Reverted https://github.com/pytorch/pytorch/pull/107930 on behalf of https://github.com/facebook-github-bot due to Diff reverted internally ([comment](https://github.com/pytorch/pytorch/pull/107930#issuecomment-1694069330))
