File _link of Package python3-sip4

<link project="SUSE:SLE-15-SP4:GA" package="python-sip4" baserev="3a57867f4d83276c6fd2df212a6e268d">
  <patches>
    <delete name="python-sip4.changes"/>
    <delete name="python-sip4.spec"/>
  </patches>
</link>