Remove a VRF.

def remove_vrf(self, id):
        """ Remove a VRF.
        """

        try:
            vrf = VRF.get(int(id))
            vrf.remove()

        except NipapError, e:
            return json.dumps({'error': 1, 'message': e.args, 'type': type(e).__name__})

        return json.dumps(vrf, cls=NipapJSONEncoder)