Remove unneeded brightness set in live Serial

wled00/wled_serial.cpp

@@ -174,7 +174,6 @@ void handleSerial()
         if (!realtimeOverride) setRealtimePixel(pixel++, red, green, blue, 0);
         if (--count > 0) state = AdaState::Data_Red;
         else {
-          if (!realtimeMode && bri == 0) strip.setBrightness(briLast, true);
           realtimeLock(realtimeTimeoutMs, REALTIME_MODE_ADALIGHT);
 
           if (!realtimeOverride) strip.show();