This patch moves a trivially unneeded set of includes from this file.
To test:
1. Apply the patch
2. Try attaching an item to another biblio
=> SUCCESS: Things work as expected!
3. Sign off :-D
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io> Signed-off-by: Owen Leonard <oleonard@myacpl.org> Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>