Remove visual noise from unotest

Change-Id: I34d98f086d1a041516174a26cbf37fc3d75da155
Reviewed-on: https://gerrit.libreoffice.org/8333
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>