MdePkg CryptoPkg EdkCompatibilityPkg: retire NO_BUILTIN_VA_FUNCS define

MdePkg CryptoPkg EdkCompatibilityPkg: retire NO_BUILTIN_VA_FUNCS define

This is never set anymore, so unsetting it or testing whether it is unset
no longer makes any sense.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-By: Liming Gao <liming.gao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>