Remove serial output in UDP Logger.

src/connectivity/udp_logger.cpp

@@ -1,8 +1,6 @@
 #include "udp_logger.h"
 
-UDPLogger::UDPLogger()
-{
-}
+UDPLogger::UDPLogger() {}
 
 UDPLogger::UDPLogger(IPAddress interface_addr, IPAddress multicast_addr, int port, String name)
 {
@@ -26,8 +24,10 @@ void UDPLogger::log_string(String message)
         delay(10);
     }
     message = _name + ": " + message;
+#ifdef SERIAL_DEBUG
     Serial.println(message);
     delay(10);
+#endif /* SERIAL_DEBUG */
     _udp.beginPacketMulticast(_multicastAddr, _port, _interfaceAddr);
     message.toCharArray(_packetBuffer, 100);
     _udp.print(_packetBuffer);