fix comments

conf/frpc_full.ini

@@ -46,7 +46,7 @@ user = your_name
 login_fail_exit = true
 
 # communication protocol used to connect to server
-# now it supports tcp, kcp, websocket and ntlm, default is tcp
+# now it supports tcp, kcp and websocket, default is tcp
 protocol = tcp
 
 # if tls_enable is true, frpc will connect frps by tls

models/config/client_common.go

@@ -100,7 +100,7 @@ type ClientCommonConf struct {
 	// set.
 	Start map[string]struct{} `json:"start"`
 	// Protocol specifies the protocol to use when interacting with the server.
-	// Valid values are "tcp", "kcp", "ntlm" and "websocket". By default, this value
+	// Valid values are "tcp", "kcp" and "websocket". By default, this value
 	// is "tcp".
 	Protocol string `json:"protocol"`
 	// TLSEnable specifies whether or not TLS should be used when communicating

utils/net/conn.go

@@ -222,8 +222,6 @@ func ConnectServerByProxy(proxyURL string, protocol string, addr string) (c net.
 		return ConnectServer(protocol, addr)
 	case "websocket":
 		return ConnectWebsocketServer(addr)
-	case "ntlm":
-		return gnet.DialTcpByProxy(proxyURL, addr)
 	default:
 		return nil, fmt.Errorf("unsupport protocol: %s", protocol)
 	}