Remove visual noise from uui

Change-Id: I64fa42929aad00fc63f2937527dd3539f9d6f7f3
Reviewed-on: https://gerrit.libreoffice.org/8337
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>