Revert "add Half support for sinh, cosh, ploygamma, entr and i0e on CPU (#99002)"
This reverts commit 5c3cf76eb2c8c8699ae0341c2753903a87bbfda2.
Reverted https://github.com/pytorch/pytorch/pull/99002 on behalf of https://github.com/osalpekar due to Need to revert this to cleanly revert https://github.com/pytorch/pytorch/pull/101976 ([comment](https://github.com/pytorch/pytorch/pull/99002#issuecomment-1560221288))
