Remove repository declaration
Remove repository declaration

Repositories are managed by settings.xml, so remove them from parent.

Change-Id: I5e377c5c3601ef3988c8397311fb120864cda4f1
Signed-off-by: Robert Varga <b8bd3df785fdc0ff42dd1710c5d91998513c57ef@cisco.com>

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