<configure
    xmlns="http://namespaces.zope.org/zope"
    xmlns:genericsetup="http://namespaces.zope.org/genericsetup">

  <genericsetup:upgradeStep
      title="Remove browser layer"
      description="Remove unneeded browser layer.."
      source="1000"
      destination="1001"
      handler="plone.patternslib.upgrades.upgrade_1000_1001"
      profile="plone.patternslib:default"
      />

</configure>
