Revert "update int4 tinygemm kernels (#111327)"
This reverts commit e0e15a4ac61648cc8f63f0ab102c32e8884fb5d1.
Reverted https://github.com/pytorch/pytorch/pull/111327 on behalf of https://github.com/jeanschmidt due to This PR is preventing the revert of https://github.com/pytorch/pytorch/pull/110914 ([comment](https://github.com/pytorch/pytorch/pull/111327#issuecomment-1765299310))
