C4::Templates::GetColumnDefs can easily be replaced using the new
Koha::Database::Columns module.
Test plan:
Go to the import patron tool and confirm that you see the same list of
patron's attribute on the import patron form.
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
