i965: remove unused brw_program.h include

i965: remove unused brw_program.h include

Neither of the changed files requires the brw_program.h include. Since
we're about to move them [to src/intel/compiler] with the next commit
there's no point in having the include.

Let alone the very confusing compiler include directive
[-I${top_srcdir}/src/mesa/drivers/dri/i965/] that one would have to use.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>