removed some obsolete fields from the document model

src/documents/signals/handlers.py

@@ -65,8 +65,8 @@ def run_post_consume_script(sender, document, **kwargs):
         document.file_name,
         document.source_path,
         document.thumbnail_path,
-        document.download_url,
-        document.thumbnail_url,
+        None,
+        None,
         str(document.correspondent),
         str(",".join(document.tags.all().values_list("slug", flat=True)))
     )).wait()