fp16 include not needed (#35708)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35708
these are not actually needed and it breaks the normal include guard that selects correct Half implementation
Test Plan: CI green
Reviewed By: malfet
Differential Revision: D20744681
fbshipit-source-id: 70e3667593c987434415ad8ac3b68828875fc3fd
