fix: remove spammy logs when using stateless mode

Stateful doesn't log the `message` either.

Author: kristof-mattei

crates/rmcp/src/transport/streamable_http_server/tower.rs

@@ -608,7 +608,6 @@ where
                             _ = cancel.cancelled() => None,
                         } {
                             Some(message) => {
-                                tracing::info!(?message);
                                 let body = serde_json::to_vec(&message).map_err(|e| {
                                     internal_error_response("serialize json response")(e)
                                 })?;
@@ -627,14 +626,12 @@ where
                         }
                     } else {
                         // SSE mode (default): original behaviour preserved unchanged
-                        let stream = ReceiverStream::new(receiver).map(|message| {
-                            tracing::info!(?message);
-                            ServerSseMessage {
+                        let stream =
+                            ReceiverStream::new(receiver).map(|message| ServerSseMessage {
                                 event_id: None,
                                 message: Some(Arc::new(message)),
                                 retry: None,
-                            }
-                        });
+                            });
                         Ok(sse_stream_response(
                             stream,
                             self.config.sse_keep_alive,