File _link of Package python3-pytest-virtualenv

<link project="SUSE:SLE-15-SP4:GA" package="python-pytest-virtualenv" baserev="c7bc2b70f1da14d19d0737a3cda6e21b">
  <patches>
    <delete name="python-pytest-virtualenv.changes"/>
    <delete name="python-pytest-virtualenv.spec"/>
  </patches>
</link>