Remove visual noise from cppuhelper

Change-Id: If23a1aa19949f91f900d55ff9e1d5039378d7277
Reviewed-on: https://gerrit.libreoffice.org/8248
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>