Decreased log severity for verloc-related functionalities (#611)

* Decreased log severity for verloc-related functionalities

* Removed unused variable

common/mixnode-common/src/rtt_measurement/listener.rs

@@ -79,8 +79,7 @@ impl ConnectionHandler {
     }
 
     pub(crate) async fn handle_connection(self: Arc<Self>, conn: TcpStream, remote: SocketAddr) {
-        // debug!("Starting connection handler for {:?}", remote);
-        info!("Starting connection handler for {:?}", remote);
+        debug!("Starting connection handler for {:?}", remote);
 
         let mut framed_conn = Framed::new(conn, EchoPacketCodec);
         while let Some(echo_packet) = framed_conn.next().await {

common/mixnode-common/src/rtt_measurement/mod.rs

@@ -252,7 +252,7 @@ impl RttMeasurer {
                 let execution_result = result.expect("the measurement task panicked!");
                 let measurement_result = match execution_result.0 {
                     Err(err) => {
-                        warn!(
+                        debug!(
                             "Failed to perform measurement for {} - {}",
                             execution_result.1.to_base58_string(),
                             err

common/mixnode-common/src/rtt_measurement/sender.rs

@@ -85,8 +85,7 @@ impl PacketSender {
         let mut results = Vec::with_capacity(self.packets_per_node);
 
         let mut seq = self.random_sequence_number();
-        for i in 0..self.packets_per_node {
-            println!("packet {}/{}", i + 1, self.packets_per_node);
+        for _ in 0..self.packets_per_node {
             let packet = EchoPacket::new(seq, &self.identity);
             let start = tokio::time::Instant::now();
             // TODO: should we get the start time after or before actually sending the data?