i965: Remove brwIsProgramNative
Originally I just fixed some unused parameter warnings in this
function. However, Ken pointed out:
"You could instead remove this driver hook. If the dd pointer is
NULL, arbprogram.c will return true. I think I'd prefer that."
Way, way back in time, I think _mesa_GetProgramivARB had the opposite
behavior. Given that it works the way it now works, I also prefer
removing the driver hook.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>