and remove the XPolyFlags enum, which has the same values and was being
converted to PolyFlags anyhow

Change-Id: Iaead84933c79a7603698a4e50257dd944df89c41
Reviewed-on: https://gerrit.libreoffice.org/31627Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>