Remove visual noise from unoxml

Change-Id: I405f2df6621197effd7e2b19844fe4d0bf7f58aa
Reviewed-on: https://gerrit.libreoffice.org/8335
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>