[Cherry-Pick] Remove Dungeon EndEpisode (#5140)

Project/Assets/ML-Agents/Examples/DungeonEscape/Scripts/DungeonEscapeEnvController.cs

         }
         else
         {
-            agent.EndEpisode();
             agent.gameObject.SetActive(false);
         }
     }
     {
         baddieCol.gameObject.SetActive(false);
         m_NumberOfRemainingPlayers--;
-        agent.EndEpisode();
         agent.gameObject.SetActive(false);
         print($"{baddieCol.gameObject.name} ate {agent.transform.name}");