Bug 21855: Changed "deprecated delete_unverified_opac_registrations.pl cronjob" to...

Bug 21855: Changed "deprecated delete_unverified_opac_registrations.pl cronjob" to "cleanup_database"

To Find Fix:

1. Go to Koha Administration
2. Search PatronSelfRegistrationVerifyByEmail
3. Verify that NOTE now says "system preference requires the
cleanup_database ..."

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Mikael Olangcay Brisebois <mikael.olangcay-brisebois@inlibro.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>