Remove visual noise from stoc

Change-Id: I19edfb2796298c4870124d0d1e9488974a010bb8
Reviewed-on: https://gerrit.libreoffice.org/8316
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>