fix ruff

Author: benjibc

eval_protocol/mcp_servers/tau2/tests/test_tau2_e2e.py

@@ -748,9 +748,7 @@ def tau2_airline_eval(
             trajectory_objects.append(UserMessage(role=role, content=content))
         elif role == "tool":
             tool_id = msg.tool_call_id if isinstance(msg.tool_call_id, str) else ""
-            trajectory_objects.append(
-                ToolMessage(id=tool_id, role=role, content=content, requestor="assistant")
-            )
+            trajectory_objects.append(ToolMessage(id=tool_id, role=role, content=content, requestor="assistant"))
 
     reward = 1.0