Bug 14598: (followup) Remove unused and non-existent C4::ItemType include

Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>

t/db_dependent/Circulation/Returns.t

@@ -25,7 +25,6 @@ use t::lib::Mocks;
 use C4::Biblio;
 use C4::Circulation;
 use C4::Items;
-use C4::ItemType;
 use C4::Members;
 use Koha::Database;
 use Koha::DateUtils;