fix(transport): Remove with_rustls for tls config (#188)

examples/src/tls/server.rs

@@ -60,7 +60,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let server = EchoServer::default();
 
     Server::builder()
-        .tls_config(ServerTlsConfig::with_rustls().identity(identity))
+        .tls_config(ServerTlsConfig::new().identity(identity))
         .add_service(pb::echo_server::EchoServer::new(server))
         .serve(addr)
         .await?;