Bug 10243: (follow-up) prevent TransportCostMatrix from overriding library holds policy

Using the TransportCostMatrix can cause the same issue. Removing the
last ditch use of the first item causes the the subroutine to continue
with the traditional matching, which will respect the hold policies.

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

C4/HoldsQueue.pm

@@ -448,7 +448,6 @@ sub MapItemsToHoldRequests {
                     $itemnumber = $item->{itemnumber};
                     last;
                 }
-                $itemnumber ||= $holding_branch_items->[0]->{itemnumber};
             }
             else {
                 warn "No transport costs for $pickup_branch";