i965: remove duplicate declaration of brw_mark_surface_used

Function was made static and moved to another header with earlier
commit.

Fixes: 760c8a1d95 ("i965: Make mark_surface_used a static inline in brw_compiler.h")
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/mesa/drivers/dri/i965/brw_program.h

@@ -58,10 +58,6 @@ brw_assign_common_binding_table_offsets(const struct gen_device_info *devinfo,
                                         struct brw_stage_prog_data *stage_prog_data,
                                         uint32_t next_binding_table_offset);
 
-void
-brw_mark_surface_used(struct brw_stage_prog_data *prog_data,
-                      unsigned surf_index);
-
 void
 brw_stage_prog_data_free(const void *prog_data);