Remove garbage comment

sql/opt_subselect.cc

@@ -2962,7 +2962,6 @@ void fix_semijoin_strategies_for_picked_join_order(JOIN *join)
     if (tablenr != first)
       pos->sj_strategy= SJ_OPT_NONE;
     remaining_tables |= s->table->map;
-    //s->sj_strategy= pos->sj_strategy;
     join->join_tab[first].sj_strategy= join->best_positions[first].sj_strategy;
     join->join_tab[first].n_sj_tables= join->best_positions[first].n_sj_tables;
   }