code: def removeRouter(self, xRouterId):
          
          print '%s call removeRouter' % self.port
          print xRouterId
          routerId = ''
          routerId = self.__convertRlocToRouterId(xRouterId)
          print routerId
  
          if routerId == None:
              print 'no matched xRouterId'
              return False
  
          try:
              cmd = 'releaserouterid %s' % routerId
              return self.__sendCommand(cmd)[0] != 'Fail'
          except Exception, e:
              ModuleHelper.WriteIntoDebugLogger('removeRouter() Error: ' + str(e))
docs: kick router with a given router id from the Thread Network
  
          Args:
              xRouterId: a given router id in hex format
  
          Returns:
              True: successful to remove the router from the Thread Network
              False: fail to remove the router from the Thread Network