and remove DestroyPrinter, doesn't not anything beyond delete'ing the
object

Change-Id: I25e14b962e65a0e131fae3ff5771c82920a4e375
Reviewed-on: https://gerrit.libreoffice.org/55498Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>