File _link of Package python3-pycairo

<link project="SUSE:SLE-15-SP4:GA" package="python-pycairo" baserev="157e9ed8d4c8217c5361e604d9d98510">
  <patches>
    <delete name="python-pycairo.changes"/>
    <delete name="python-pycairo.spec"/>
  </patches>
</link>