ptn: Silence unused parameter warning
ptn: Silence unused parameter warning

The KIL instruction doesn't have a destination, so ptn_kil never uses
dest.

program/prog_to_nir.c: In function ‘ptn_kil’:
program/prog_to_nir.c:547:38: warning: unused parameter ‘dest’ [-Wunused-parameter]
 ptn_kil(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
                                      ^

Signed-off-by: Ian Romanick <2b237cafb16dc45038e85df6c85e74e6d899eba9@intel.com>
Reviewed-by: Iago Toral Quiroga <a847aabaac44184372f6b1cd1a59aa254daaeb0b@igalia.com>
Reviewed-by: Kenneth Graunke <bd2562f754ec92342f93f61c25d731e290a2ffa8@whitecape.org>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler