Remove unused defines from config.h, part 3.

Remove unused defines from config.h, part 3.

- C89 defines size_t in stddef.h, even for free-standing
  implementations, we probably don't need to define our own fallback
  (and it probably doesn't work in any case).
- F77_FUNC_, the underscored version is not used anywhere.  Left it's
  definition in CMakeLists.txt as commented.
- TMPI_WINDOWS_NUMA_API, not used in source files nor in CMake.
- HAVE_LIBM and GMX_LARGEFILES, not used in any source file.
- HAVE_?MMINTRIN_H, not used anywhere.
- restrict, not used anywhere, and the check was broken.

Change-Id: Icc5bba87973c7a086a01be486a5785faee4c5cad