Silence old/new frequency are same message in dev_pm_opp_set_rate

drivers/opp/core.c

@@ -938,8 +938,6 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
 	if (old_freq == freq) {
 		if (!opp_table->required_opp_tables && !opp_table->regulators &&
 		    !opp_table->paths) {
-			dev_dbg(dev, "%s: old/new frequencies (%lu Hz) are same, nothing to do\n",
-				__func__, freq);
 			ret = 0;
 			goto put_opp_table;
 		}