Bug 28727: (QA follow-up) Simplify permission check

Bug 28727: (QA follow-up) Simplify permission check

There was another permission check for edit_items directly below,
so instead of changing them to both be edit_items, I think we
can now remove one.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 5602a405cc650f9390ad3ce643abf1c6880b1cc8)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>