Bug 21848: Remove Text::Unaccent from C4::Members

Bug 21848: Remove Text::Unaccent from C4::Members

At refactoring time the unac_string call was moved to Koha::Patron.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit 5e17032700790032088fe3f2209c3d173e77d540)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 7f4a7c42ad23e84e3dab1cffaaa81f7897171758)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>