erp5_catalog: Remove unsed import from migration function [2]

product/ERP5/ERP5Site.py

@@ -1837,10 +1837,7 @@ class ERP5Site(FolderMixIn, CMFSite, CacheCookieMixin):
 
       Now, we do shift the default_sql_catalog_id to the new ERP5 Catalog installed
     """
-    # We'll be migrating Persistent Objects
-    #from Products.ERP5Type.dynamic.persistent_migration import PickleUpdater
     from Products.ERP5Catalog.ERP5Catalog import ERP5Catalog
-    #PickleUpdater(self)
 
     # Before migrating check if the portal_type exists, cause we don't want
     # migration before updating bt5