and drop unused E_UILOCALE enumerator

Change-Id: Ic9bdac91fab15af45e7dbd613e6e44b73b5cf9de
Reviewed-on: https://gerrit.libreoffice.org/34066Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>