uipcps: enrollment: remove redundant operation to add NeighborCandidate
uipcps: enrollment: remove redundant operation to add NeighborCandidate

The same object is received at the first RIB sync.

autrimpo/rlite,vmaffione/rlite,vmaffione/rlite,autrimpo/rlite,vmaffione/rlite,autrimpo/rlite,autrimpo/rlite,vmaffione/rlite