Bug 27563: Remove check-url.pl in favor of check-url-quick.pl

Bug 27563: Remove check-url.pl in favor of check-url-quick.pl

The check-url.pl script has been deprecated since Koha 3.8 - this patch removes it.
If any users are still referencing that script in their cronjobs they will need to
update to the new script upon upgrade.

To test:
1 - verify the script is gone
2 - verify check-url-quick.pl works

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>