and drop unused INVERT enumerator

Change-Id: I6db12ff76a5515bcb4691403b8fb380f9d74c1c9
Reviewed-on: https://gerrit.libreoffice.org/34055Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>