reduce header file to boost cpp_wrapper build. (#107585)
1. Reduce cpp_wrapper un-used header files.
2. Clean pch cache, when use_pch is False.
The first change will reduce the build time from 7.35s to 4.94s.
Before change:
After change:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/107585
Approved by: https://github.com/ezyang, https://github.com/jansel, https://github.com/jgong5
