Replace with C++11 delete copy-constructur
and copy-assignment.
Delete default-constructors when comments suggested it.

Change-Id: Ieeaf6ca998a4165d6eacf5e900c6a09aafdcfbe6
Reviewed-on: https://gerrit.libreoffice.org/23903Reviewed-by: Jochen Nitschke <j.nitschke+logerrit@ok.de>
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>