By creating deleted methods for the wrong calls.

Avoids the compiler needing to construct a temporary

Change-Id: I3b8c648d6bb22d22827bf74f21ea5a2a17fc0f6a
Reviewed-on: https://gerrit.libreoffice.org/72103
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>