Remove sequence order on menu favorite

Instead we order the favorites of a user by descending id. Such that the last
favorite set is the first from the list. So user can put a favorite back on
top by unset a menu and set it again.

trytond/trytond/ir/ui/menu.py

@@ -262,7 +262,7 @@ class UIMenu(
         return menu2favorite
 
 
-class UIMenuFavorite(sequence_ordered(), ModelSQL, ModelView):
+class UIMenuFavorite(ModelSQL, ModelView):
     "Menu Favorite"
     __name__ = 'ir.ui.menu.favorite'
 
@@ -289,7 +289,8 @@ class UIMenuFavorite(sequence_ordered(), ModelSQL, ModelView):
         user = Transaction().user
         favorites = cls.search([
                 ('user', '=', user),
-                ])
+                ],
+            order=[('id', 'DESC')])
         return [(f.menu.id, f.menu.rec_name, f.menu.icon) for f in favorites]
 
     @classmethod

trytond/trytond/ir/view/ui_menu_favorite_form.xml

@@ -4,8 +4,6 @@ this repository contains the full copyright notices and license terms. -->
 <form>
     <label name="menu"/>
     <field name="menu"/>
-    <label name="sequence"/>
-    <field name="sequence"/>
     <label name="user"/>
     <field name="user"/>
 </form>

trytond/trytond/ir/view/ui_menu_favorite_list.xml

@@ -1,8 +1,7 @@
 <?xml version="1.0"?>
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
-<tree sequence="sequence">
+<tree>
     <field name="menu" expand="1"/>
     <field name="user" expand="1"/>
-    <field name="sequence" tree_invisible="1"/>
 </tree>