Already deleted records are to be deleted again

[jze]

In our harvest run, records that have already been deleted are to be deleted again. This leads to an error.

  File "/usr/lib/ckan/default/src/ckanext-dcat/ckanext/dcat/harvesters/rdf.py", line 281, in import_stage
    p.toolkit.get_action('package_delete')(context, {'id': harvest_object.package_id})
  File "/usr/lib/ckan/default/src/ckan/ckan/logic/__init__.py", line 504, in wrapped
    result = _action(context, data_dict, **kw)
  File "/usr/lib/ckan/default/src/ckan/ckan/logic/action/delete.py", line 90, in package_delete
    raise NotFound