File _link of Package python3-python-slugify

<link project="SUSE:SLE-15-SP4:GA" package="python-python-slugify" baserev="55502d37a14f9f37bd2ed716da86c579">
  <patches>
    <delete name="python-python-slugify.changes"/>
    <delete name="python-python-slugify.spec"/>
  </patches>
</link>