mesa: remove unused macros from colormac.h
mesa: remove unused macros from colormac.h

Acked-by: Matt Turner <789b315743a28dd066a4ba1459c35951c291d8a6@gmail.com>
Reviewed-by: Mark Janes <dc19c7a5044e1b627d35321fa5e1121fad8638f9@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler