Remove variable substituion to %NUM% to correctly invoke local command

Referencing %NUM% must be a mistake, because with it networks are not
deleted properly. See other commands within quantum-adv-test.sh as
an example.

Fixes bug #1164018

Change-Id: Ib222d82a1b8187167606b2543bb74c28b8465b5a
Merge "Remove variable substituion to %NUM% to correctly invoke local command"