message: Fix cycle_all_leds method
diff: @@ -103,11 +103,8 @@ async fn cycle_all_leds(timer_driver: &ParallelSleepDriver<'_>, led_driver: &Led
  loop {
  for led in led_driver.all() {
  let _ = led.on();
  - }
  let _ = timer_driver.sleep(Duration::from_ms(100)).await;
  - for led in led_driver.all() {
  let _ = led.off();
  }
  - let _ = timer_driver.sleep(Duration::from_ms(100)).await;
  }
  }
  