Bug 16170: [QA Follow-up] Adjust Items.t

Bug 16170: [QA Follow-up] Adjust Items.t

Items.t inserts an item via biblioitem not correctly linked to biblio.
The new foreign key constraint does not allow that.
Actually, we should be choosing to either remove biblioitems from Koha or
remove biblionumber from items.

Note: This seems to be the only case where an item is added this way.

Test plan:
Run Items.t

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 1608b89b7ff90ae1cc307d9f096ddaab29ba2192)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>