nl_l3: del_l3_unicast_route: do not open code del_l3_neigh_egress
nl_l3: del_l3_unicast_route: do not open code del_l3_neigh_egress

Calling del_l3_neigh_egress instead of del_l3_egress will do the bridge
port resolution for us, so let's just call that one.

Signed-off-by: Jonas Gorski <9712c064bde5a52658fc87d6454b4956f9bf286b@bisdn.de>

bisdn/basebox,bisdn/basebox,bisdn/basebox,bisdn/basebox