Remove visual noise from remotebridges

Change-Id: Id3696781d3480961c516f2a43135415b15cedde0
Reviewed-on: https://gerrit.libreoffice.org/8293
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>