code: public void removeClientNotification(RESTRequest request, ObjectName objectName, int clientID) {
          //Get the client area 
          ClientNotificationArea clientArea = getInboxIfAvailable(clientID, null);
  
          //Remove the corresponding listener (will also remove from MBeanServer)
          clientArea.removeClientNotificationListener(request, objectName);
      }
docs: Removes a corresponding client notification for the given ObjectName