Bug 21202: Replace C4::Items::GetItemsByBiblioitemnumber calls

Bug 21202: Replace C4::Items::GetItemsByBiblioitemnumber calls

http://lists.koha-community.org/pipermail/koha-devel/2018-August/044757.html

Prior to this patch, GetRecords returned timestampX, cardX and borrowerX for
the last 3 patrons who checked out the items.

I have no idea if it is a desired effects but, as this code has been
there for a very long time (2005), I suspect it's not.
The "doc" (/ilsdi.pl?service=Describe&verb=GetRecords) does not say
anything about the checkouts info.

Test plan:
hit /ilsdi.pl?service=GetRecords&id=1
and confirm the info about items are displayed correctly

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>