fix the server host msg for the irssi client now the login msg is clean

Server.cpp

@@ -978,11 +978,8 @@ void Server::handleClientData(int fd)
                 iss >> channelName >> mode >> nick;
                 if (channelName[0] != '#')
                 {
-                    std::string errorMessage = ":server.host NOTICE " + nick + " :Error: Channel start with #\r\n";
-                    send(fd, errorMessage.c_str(), errorMessage.length(), 0);
                     client.clearCommand();
                     return;
-                    
                 }
                 channelName = channelName.substr(1);
                 channelName = trim(channelName);