Bug 35194: Remove obsoleted sortable function

Bug 35194: Remove obsoleted sortable function

Removes two occurrences and a commented one.

Test plan:
[1] Go to cataloguing editor. Open dev console. Clone 500.
[2] Go to Admin/Did you mean. Try to toggle options.

With this patch it works. Without this patch, JS errors.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Emily Lamancusa <emily.lamancusa@montgomerycountymd.gov>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>