Bug 17736: [QA Follow-up] We do not need GetItemHolds in acqui

Bug 17736: [QA Follow-up] We do not need GetItemHolds in acqui

The solution of Jonathan can be applied in two other cases, effectively
making GetItemHolds obsolete.

Test plan:
[1] Git grep on GetItemHolds
[2] Add an order, place a hold, delete order.
[3] Add an order, receive, place hold, delete order.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>