Bug 31421: Do not apply library limits to Categories plugin

Bug 31421: Do not apply library limits to Categories plugin

This patch simply changes from using 'search_with_library_limits'
to 'search'

The limits I think are intended to prevent users from setting a patron to the wrong category,
they are not meant to hide patrons. Or rather, they don't do that, patrons are returned in search
but cannot be processed. The dropdowns as well won't contain the category, so you can see these
patrons, but not filter by the category

Bug 31422 and bug 31032 point out further issues with limits.

For now, let's fix searching

To test:
1 - Edit Patron category 'Patron/PT'
2 - Try to do a patron search that returns patrons in this category
3 - See 'Processing' and error in JS console: Uncaught TypeError: categories_map[data] is undefined
4 - Apply patch
5 - Restart all and repeate
6 - It works now!

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>