Bug 17631: Koha::Biblio - Remove GetHolds

Bug 17631: Koha::Biblio - Remove GetHolds

C4::Biblio::GetHolds can be replaced with Koha::Biblio->holds->count

Test plan:
Create an order and place a hold on the biblio you have ordered.
On the basket view, you should not be able to Cancel the order and/or
delete the record
Receive the order, on the parcel page you should get the same behavior.

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>