This method unregister the registered BMP server.

        ``address`` specifies the IP address of a BMP server.

        ``port`` specifies the listen port number of a BMP server.

def bmp_server_del(self, address, port):
        """ This method unregister the registered BMP server.

        ``address`` specifies the IP address of a BMP server.

        ``port`` specifies the listen port number of a BMP server.
        """

        func_name = 'bmp.stop'
        param = {
            'host': address,
            'port': port,
        }

        call(func_name, **param)