Remove statsrecorder

Project/Assets/ML-Agents/Examples/Hallway/Scripts/HallwayAgent.cs

         m_AgentRb = GetComponent<Rigidbody>();
         m_GroundRenderer = ground.GetComponent<Renderer>();
         m_GroundMaterial = m_GroundRenderer.material;
-        m_statsRecorder = Academy.Instance.StatsRecorder;
+        //m_statsRecorder = Academy.Instance.StatsRecorder;
     }
 
     public override void CollectObservations(VectorSensor sensor)
             {
                 SetReward(1f);
                 StartCoroutine(GoalScoredSwapGroundMaterial(m_HallwaySettings.goalScoredMaterial, 0.5f));
-                m_statsRecorder.Add("Goal/Correct", 1, StatAggregationMethod.Sum);
+                // m_statsRecorder.Add("Goal/Correct", 1, StatAggregationMethod.Sum);
-                m_statsRecorder.Add("Goal/Wrong", 1, StatAggregationMethod.Sum);
+                // m_statsRecorder.Add("Goal/Wrong", 1, StatAggregationMethod.Sum);
             }
             EndEpisode();
         }
             symbolXGoal.transform.position = new Vector3(7f, 0.5f, 22.29f) + area.transform.position;
             symbolOGoal.transform.position = new Vector3(-7f, 0.5f, 22.29f) + area.transform.position;
         }
-        m_statsRecorder.Add("Goal/Correct", 0, StatAggregationMethod.Sum);
-        m_statsRecorder.Add("Goal/Wrong", 0, StatAggregationMethod.Sum);
+        // m_statsRecorder.Add("Goal/Correct", 0, StatAggregationMethod.Sum);
+        // m_statsRecorder.Add("Goal/Wrong", 0, StatAggregationMethod.Sum);
     }
 }