exp/ssh: remove unused forwarding methods in Server Listener

R=agl, rsc
CC=golang-dev
https://golang.org/cl/5436056

src/pkg/exp/ssh/server.go

@@ -636,15 +636,15 @@ func (s *ServerConn) Accept() (Channel, error) {
 
 // A Listener implements a network listener (net.Listener) for SSH connections.
 type Listener struct {
-	listener net.Listener
-	config   *ServerConfig
+	net.Listener
+	config *ServerConfig
 }
 
 // Accept waits for and returns the next incoming SSH connection.
 // The receiver should call Handshake() in another goroutine 
 // to avoid blocking the accepter.
 func (l *Listener) Accept() (*ServerConn, error) {
-	c, err := l.listener.Accept()
+	c, err := l.Listener.Accept()
 	if err != nil {
 		return nil, err
 	}
@@ -652,16 +652,6 @@ func (l *Listener) Accept() (*ServerConn, error) {
 	return conn, nil
 }
 
-// Addr returns the listener's network address.
-func (l *Listener) Addr() net.Addr {
-	return l.listener.Addr()
-}
-
-// Close closes the listener.
-func (l *Listener) Close() error {
-	return l.listener.Close()
-}
-
 // Listen creates an SSH listener accepting connections on
 // the given network address using net.Listen.
 func Listen(network, addr string, config *ServerConfig) (*Listener, error) {