platform/x86: eeepc-laptop: Drop duplicate check for led_classdev_unregister()

led_classdev_unregister() already has the very same check, so,
drop a duplicate in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/platform/x86/eeepc-laptop.c

@@ -541,13 +541,11 @@ static int eeepc_led_init(struct eeepc_laptop *eeepc)
 
 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
 {
-	if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
-		led_classdev_unregister(&eeepc->tpd_led);
+	led_classdev_unregister(&eeepc->tpd_led);
 	if (eeepc->led_workqueue)
 		destroy_workqueue(eeepc->led_workqueue);
 }
 
-
 /*
  * PCI hotplug (for wlan rfkill)
  */