File _link of Package python3-pymemcache

<link project="SUSE:SLE-15-SP4:GA" package="python-pymemcache" baserev="af62984c9eb5177874fc0b67d106d01d">
  <patches>
    <delete name="python-pymemcache.changes"/>
    <delete name="python-pymemcache.spec"/>
  </patches>
</link>