Deletes/withdraws *prefix* from VRF identified by *route_dist* and
    source as network controller.

def delete_local(route_dist, prefix, route_family=VRF_RF_IPV4):
    """Deletes/withdraws *prefix* from VRF identified by *route_dist* and
    source as network controller.
    """
    try:
        tm = CORE_MANAGER.get_core_service().table_manager
        tm.update_vrf_table(route_dist, prefix,
                            route_family=route_family, is_withdraw=True)
        # Send success response.
        return [{ROUTE_DISTINGUISHER: route_dist, PREFIX: prefix,
                 VRF_RF: route_family}]
    except BgpCoreError as e:
        raise PrefixError(desc=e)