Revert "[Reland] fix missing-prototypes warnings in torch_cpu (Part 4) (#101949)"
This reverts commit 4f2c007a1b5170c2aa0d47e388ff9e07c7a7d354.
Reverted https://github.com/pytorch/pytorch/pull/101949 on behalf of https://github.com/osalpekar due to As noted in @izaitsevfb's comment, we are still seeing linker errors, this time due to `nnc_prepacked_linear_clamp_run` being made a static function. ([comment](https://github.com/pytorch/pytorch/pull/101949#issuecomment-1560226880))
