Introducing $orders->filter_by_obsolete and $orders->cancel.
Test plan:
Run t/db_dependent/Koha/Acquisition/Orders.t
Create basket with few orders. Remove some biblio records.
Run acq_cancel_obsolete_orders.pl -c
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl> Signed-off-by: David Nind <david@davidnind.com> Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com> Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>