Clean TODO file

TODO

@@ -5,7 +5,5 @@
 - Use determined action name in workflow like for default value
 - Add check for index and constraint name lenght (limit 31)
 - Change _constraint to pass a BrowseRecordList instead of a list of ids
-- Change action, menu on res.user into a Many2Many
 - Add order attribute on page tag
-- Handle HTTP compression for XML-RPC
 - Find the on_change method for inherited fields