Revert "led: core: Fix brightness setting when setting delay_off=0"

This reverts commit 86b9fa21 which was
commit 2b83ff96 upstream.

The commit being reverted has two flaws:
 - it introduces a regression, fixed in the upstream
   commit 7b6af2c5.
 - it has truncated commit message
Reported-by: Sasha Levin <Alexander.Levin@microsoft.com>
Reported-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/leds/led-core.c

@@ -186,7 +186,7 @@ void led_blink_set(struct led_classdev *led_cdev,
 		   unsigned long *delay_on,
 		   unsigned long *delay_off)
 {
-	led_stop_software_blink(led_cdev);
+	del_timer_sync(&led_cdev->blink_timer);
 
 	led_cdev->flags &= ~LED_BLINK_ONESHOT;
 	led_cdev->flags &= ~LED_BLINK_ONESHOT_STOP;