There is no point, since it's the size of a pointer anyway

Found by temporarily making their 'operator new' methods
deleted.

Change-Id: I265e40ce93ad4bad08b4f0bd49db08929e44b7d6
Reviewed-on: https://gerrit.libreoffice.org/19628Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>