ospf6d: remove unused broken function

ospf6_interface_if_del has not been in use since for quite some
years and is broken. (Will crash ospf6d if oi->area == NULL)

Since it is not used, just remove it.

Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Tested-by: NetDEF CI System <cisystem@netdef.org>
Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
3 files changed