Bug 34650: Remove unnecessary CSRF check on edit_form

Bug 34650: Remove unnecessary CSRF check on edit_form

The op "edit_form" doesn't change state. It just renders the edit
form. Therefore, it doesn't need a CSRF token/check.

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit caf962fbaa4f52bfea12acfa02671cd6920f7a53)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit e81e765d7da1b3e34ba4976c2fa6264e658d0044)
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>