gbproxy: Delete gbproxy_nse in delete-gbproxy-peer VTY command

The gbproxy_nse is created when the signalling BVC is resetted. When
we delete all bvcs of an nsei we need to remove it as well.

Change-Id: I997b29fef93188565f81bd403bc68840473958c3
Related: SYS#5002
1 file changed