BUG-1486: Pick Javassist version from odlparent
BUG-1486: Pick Javassist version from odlparent

Rather than defining it ourselves, pick the one from global project
settings.

Change-Id: I1c672ff3f09e87b156a65a368635cfff95979684
Signed-off-by: Robert Varga <b8bd3df785fdc0ff42dd1710c5d91998513c57ef@cisco.com>

opendaylight/yangtools,522986491/yangtools,opendaylight/yangtools,NovusTheory/yangtools