Bug 11397: Remove the itemnumber list on the Acquisition detail tab

Bug 11397: Remove the itemnumber list on the Acquisition detail tab

The list of links to items from the acquisitions tab can be
unwieldy if an order was used to purchase a lot of them, and the
availability of AcqItemSetSubfieldsWhenReceived and filters on the
holdings table provide alternative ways to do things like turn
off on-order statuses.

Test plan:
- verify this patch does not introduce regression on the enhancement
  introduced by bug 8230.
- verify the itemnumber list does not appears anymore.

Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
The acquisitions details tab on the holdings table in the staff
client no longer shows the links to the items. Tests pass.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes all tests and QA script.
In my tests the itemnumbers didn't show up on the acquisition
detail tab before the patch. So the patch visually only changed
the column header for me. All other acquisition related information
showed up ok.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>