They are already handled in osl file URL functions.
Change-Id: Id0c224bdb79963e7ce52abde57bf05b0a6a81ff5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/158741
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>