authentication_policy: fix automatic credential recovery

fix NameError introduced in a97402d3

bt5/erp5_authentication_policy/SkinTemplateItem/portal_skins/erp5_authentication_policy/Person_notifyPasswordExpire.py

@@ -28,8 +28,7 @@ credential_recovery = module.newContent(
                                portal_type="Credential Recovery",
                                reference=context.getReference(),
                                destination_decision_value=context,
-                               language=portal.Localizer.get_selected_language(),
-                               activate_kw={'tag': tag})
+                               language=portal.Localizer.get_selected_language())
 # immediate reindex allowed because it is a new object
 credential_recovery.immediateReindexObject()
 context.serialize()