Precompiled logic update [Windows build]

Nuke HAVE_PCH and use only one macro for PCH logic.
This macro is enabled (=1) or disabled (=0) based on --without-pch and no_pch parameters in premake5
Visual studio does not more override this logic

Differential Revision: https://code.wildfiregames.com/D1380
Reviewed by: @Itms