smoketest: static-routes: enable VRF table leaking test
smoketest: static-routes: enable VRF table leaking test

As we have upgrade to FRR 7.5 in current the issue within FRR vtysh [1]
is fixed.

[1]: https://github.com/FRRouting/frr/issues/8016

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x