remove episode logger success print

Author: qywu

rllm/engine/agent_workflow_engine.py

@@ -179,7 +179,6 @@ async def execute_tasks(self, tasks: list[dict], task_ids: list[str] | None = No
             try:
                 logger.info(f"Logging {len(results)} episodes to step={self.current_step}, mode={self.current_mode}, epoch={self.current_epoch}")
                 self.episode_logger.log_episodes_batch(results, self.current_step, self.current_mode, self.current_epoch)
-                logger.info(f"Successfully logged {len(results)} episodes")
             except Exception as e:
                 logger.error(f"Failed to log episodes: {e}")
                 import traceback