Don't print all chat messages on server

src/main.rs

@@ -137,7 +137,6 @@ fn handle_client(mut stream: TcpStream, server: Arc<Mutex<ChatServer>>, client_i
         }
         let msg = format!("<{}> {}", nick, msg_raw);
         server.lock()?.send_to_all(&msg)?;
-        println!("{}", msg);
     }
     Ok(())
 }