'Remove port from firewall
All flows related to this port are removed from ovs. Port is also
removed from ports managed by this firewall.'

def remove_port_filter(self, port):

    if self.is_port_managed(port):
        of_port = self.get_ofport(port)
        self.delete_all_port_flows(of_port)
        self.sg_port_map.remove_port(of_port)
        for sec_group in of_port.sec_groups:
            self._schedule_sg_deletion_maybe(sec_group.id)
