erp5_mrp: auto_planned state is in planned order states and not future inventory

We need to be able to see the future without auto planned orders, else how are we going to update them?

bt5/erp5_mrp/WorkflowTemplateItem/portal_workflow/production_order_workflow/states/auto_planned.xml

@@ -42,7 +42,6 @@
             <value>
               <tuple>
                 <string>planned_order</string>
-                <string>future_inventory</string>
               </tuple>
             </value>
         </item>