Remove definitions of build machine specific types.
Remove definitions of build machine specific types.

Remove EFI_IMAGE_OPTIONAL_HEADER, EFI_IMAGE_NT_HEADERS,
EFI_IMAGE_NT_OPTIONAL_HDR_MAGIC, and EFI_IMAGE_MACHINE_TYPE_SUPPORTED,
since these were defined differently based on the architecture
of the build machine.  The BaseTools should support the edk2
supported processor architectures and not depend on the architecture
of the build platform.

git-svn-id: f3880c1fc5096ce2109c8aec392d8e07f619f417@1652 c2973edb-eda0-4c78-bc6a-9341b269661f

bitcrystal/buildtools-BaseTools,tianocore/buildtools-BaseTools,tianocore/buildtools-BaseTools,bitcrystal/buildtools-BaseTools,bitcrystal/buildtools-BaseTools,tianocore/buildtools-BaseTools,tianocore/buildtools-BaseTools,bitcrystal/buildtools-BaseTools,bitcrystal/buildtools-BaseTools,tianocore/buildtools-BaseTools