chore: remove dead code

Author: marcusschiesser

templates/components/multiagent/python/app/workflows/tools.py

@@ -24,16 +24,6 @@ async def acall(self, ctx: Context, input: Any) -> ToolOutput:  # type: ignore
         pass
 
 
-class ResponseGenerator(BaseModel):
-    """
-    A response generator from chat_with_tools.
-    """
-
-    generator: AsyncGenerator[ChatResponse | None, None]
-
-    model_config = ConfigDict(arbitrary_types_allowed=True)
-
-
 class ChatWithToolsResponse(BaseModel):
     """
     A tool call response from chat_with_tools.