fix flake merge conflicts with master

ml-agents/mlagents/trainers/agent_processor.py

                         del self.episode_rewards[agent_id]
                 elif not next_info.local_done[next_idx]:
                     self.episode_steps[agent_id] += 1
-                    
+
         if "action" in take_action_outputs:
             self.policy.save_previous_action(
                 curr_info.agents, take_action_outputs["action"]

ml-agents/mlagents/trainers/trainer_controller.py

                         )
                     )
                     continue
-                _processor = self.managers[name_behavior_id].add_experiences(
+                self.managers[name_behavior_id].add_experiences(
                     step_info.previous_all_brain_info[name_behavior_id],
                     step_info.current_all_brain_info[name_behavior_id],
                     step_info.brain_name_to_action_info[name_behavior_id].outputs,