remove group id

com.unity.ml-agents/Editor/BehaviorParametersEditor.cs

         const string k_InferenceDeviceName = "m_InferenceDevice";
         const string k_BehaviorTypeName = "m_BehaviorType";
         const string k_TeamIdName = "TeamId";
-        const string k_GroupIdName = "GroupId";
         const string k_UseChildSensorsName = "m_UseChildSensors";
         const string k_ObservableAttributeHandlingName = "m_ObservableAttributeHandling";
 
             }
             needPolicyUpdate = needPolicyUpdate || EditorGUI.EndChangeCheck();
 
-            EditorGUILayout.PropertyField(so.FindProperty(k_GroupIdName));
             EditorGUILayout.PropertyField(so.FindProperty(k_TeamIdName));
             EditorGUI.BeginDisabledGroup(!EditorUtilities.CanUpdateModelProperties());
             {

com.unity.ml-agents/Runtime/Policies/BehaviorParameters.cs

         [HideInInspector, SerializeField, FormerlySerializedAs("m_TeamID")]
         public int TeamId;
 
-        /// <summary>
-        /// The group ID for this behavior.
-        /// </summary>
-        [HideInInspector, SerializeField]
-        [Tooltip("Assign the same Group ID to all Agents in the same Area.")]
-        public int GroupId;
         // TODO properties here instead of Agent
 
         [FormerlySerializedAs("m_useChildSensors")]
         /// </summary>
         public string FullyQualifiedBehaviorName
         {
-            get { return m_BehaviorName + "?team=" + TeamId + "&group=" + GroupId; }
+            get { return m_BehaviorName + "?team=" + TeamId; }
         }
 
         internal IPolicy GeneratePolicy(ActionSpec actionSpec, HeuristicPolicy.ActionGenerator heuristic)