since we are now holding these via reference counting, no need to clone
them

Change-Id: I7b0bd86f4a5bca428f7dcd989f838a9aa0c7e179
Reviewed-on: https://gerrit.libreoffice.org/55427Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>