Bug 29272: (QA follow-up) Category setup overrides syspref

Bug 29272: (QA follow-up) Category setup overrides syspref

This patch removes an early short-circuit we had, which wasn't correct
regarding the OpacPasswordChange syspref. If a patron category is
allowed to change password, it overrides the syspref.

To test:
1. Tests still pass.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>