update todo list

Author: thomas-kl1

TODO.md

@@ -27,22 +27,6 @@ Area:
 - Payment Data
 - Invitation Data
 
-## Config
-
-- Improve UI of fields: attributes list instead of text field
-
-## Doc
-
-- Add images
-- Complete developer guide
-- Attributes, Custom Attributes, Extensible Data
-
-## Notification
-
-notify customer from its requests
-- Configuration
-- Mail templates
-
 ## yu
 
 https://github.com/magento/architecture/pull/145/files