void RemoveEventListener(CXmlObjectBase* pObj);
  Property Description  
    Method Name RemoveEventListener  
    Argument - pObj The class that is already listening to the collections events.  
    Description Stops a class listening to the collections events  
    Remarks This mechanism allows the you to receive change events from the collection class, it is principally designed for internal use within the LtXmlLib, but can be used externally.
Care should be taken to ensure that RemoveEventListener is called before the class receiving the events is destroyed.
AddEventListener must have been called before this method.