These aren't used any more, and the C++11 std equivalents don't use
get_pointer() overloads.

Change-Id: Ib97a6a595863e21a1621c63709ea2b28f6550fde
Reviewed-on: https://gerrit.libreoffice.org/24982Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>