make suspend quieter

Fix a goof in Linus' recent PM API updates:  don't emit any messages in the
typical NOP "already suspended it" late suspend case.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/base/power/suspend.c

@@ -102,11 +102,6 @@ static int suspend_device_late(struct device *dev, pm_message_t state)
 {
 	int error = 0;
 
-	if (dev->power.power_state.event) {
-		dev_dbg(dev, "PM: suspend_late %d-->%d\n",
-			dev->power.power_state.event, state.event);
-	}
-
 	if (dev->bus && dev->bus->suspend_late && !dev->power.power_state.event) {
 		dev_dbg(dev, "LATE %s%s\n",
 			suspend_verb(state.event),