cleanup

clientconn.go

@@ -104,15 +104,6 @@ func WithDialer(f func(addr string, timeout time.Duration) (net.Conn, error)) Di
 	}
 }
 
-// WithHandshaker returns a DialOption that specifies a function to perform some handshaking
-// with the server. It is typically used to negotiate the wire protocol version and security
-// protocol with the server.
-//func WithHandshaker(h func(conn net.Conn) (credentials.TransportAuthenticator, error)) DialOption {
-//	return func(o *dialOptions) {
-//		o.copts.Handshaker = h
-//	}
-//}
-
 // Dial creates a client connection the given target.
 // TODO(zhaoq): Have an option to make Dial return immediately without waiting
 // for connection to complete.