Removing testing code in PushAgentBasic.cs.

unity-environment/Assets/ML-Agents/Examples/PushBlock/Scripts/PushAgentBasic.cs

         transform.position = GetRandomSpawnPos();
         agentRB.velocity = Vector3.zero;
         agentRB.angularVelocity = Vector3.zero;
-
-        // Set the size of the goal according to the current lesson in the
-        // curriculum.
-        goal.transform.localScale = new Vector3(
-            academy.resetParameters["goal_width"],
-            goal.transform.localScale.y,
-            academy.resetParameters["goal_length"]);
     }
 }