[FIX] sale: dead code (order state) from v8
[FIX] sale: dead code (order state) from v8

Commit 94716a3 refactored 'sale.order' state selection in Odoo 9.0 but
the portal still used some deleted state values.

Closes #11164

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo