remove manager from academy when dispose

com.unity.ml-agents.extensions/Runtime/Teams/BaseTeamManager.cs

+using System;
-    public class BaseTeamManager : ITeamManager
+    public class BaseTeamManager : ITeamManager, IDisposable
     {
         int m_StepCount;
         int m_TeamMaxStep;
             Academy.Instance.TeamManagerStep += _ManagerStep;
         }
 
+        public void Dispose()
+        {
+            Academy.Instance.TeamManagerStep -= _ManagerStep;
+        }
+
         void _ManagerStep()
         {
             m_StepCount += 1;
 
         /// <summary>
         /// Register the agent to the TeamManager.
-        /// Registered agents will be able to receive team rewards from the TeamManager.
-        /// All agents in the same training area should be added to the same TeamManager.
+        /// Registered agents will be able to receive team rewards from the TeamManager
+        /// and share observations during training.
         /// </summary>
         public virtual void RegisterAgent(Agent agent)
         {
         /// <summary>
         /// Remove the agent from the TeamManager.
         /// </summary>
-        public virtual void RemoveAgent(Agent agent)
+        public virtual void UnregisterAgent(Agent agent)
         {
             if (m_Agents.Contains(agent))
             {

com.unity.ml-agents/Runtime/Actuators/ITeamManager.cs

 
         void RegisterAgent(Agent agent);
 
-        void RemoveAgent(Agent agent);
+        void UnregisterAgent(Agent agent);
     }
 }

com.unity.ml-agents/Runtime/Agent.cs

         {
             if (m_TeamManager != null)
             {
-                m_TeamManager.RemoveAgent(this);
+                m_TeamManager.UnregisterAgent(this);
             }
         }
 
         {
             if (m_TeamManager != null)
             {
-                m_TeamManager.RemoveAgent(this);
+                m_TeamManager.UnregisterAgent(this);
             }
             m_TeamManager = teamManager;
             teamManager?.RegisterAgent(this);