fix discovery

src/main/java/fr/insa/clavardator/network/NetDiscoverer.java

@@ -36,7 +36,6 @@ public class NetDiscoverer {
 			callback.onResponseReceived(ipAddr, data);
 		}, errorCallback);
 		responseListener.start();
-		broadcastSender.start();
 	}
 
 	/**