intel/compiler: Silence unused parameter warning in update_inst_scoreboard

intel/compiler: Silence unused parameter warning in update_inst_scoreboard

src/intel/compiler/brw_fs_scoreboard.cpp: In function ‘void {anonymous}::update_inst_scoreboard(const fs_visitor*, const ordered_address*, const fs_inst*, unsigned int, {anonymous}::scoreboard&)’:
src/intel/compiler/brw_fs_scoreboard.cpp:793:45: warning: unused parameter ‘shader’ [-Wunused-parameter]
  793 |    update_inst_scoreboard(const fs_visitor *shader, const ordered_address *jps,
      |                           ~~~~~~~~~~~~~~~~~~^~~~~~

Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4582>