[17.0] [FIX] stock_inventory: remove invalid states attribute on resp…

…onsible_id

stock.inventory.responsible_id.states is no longer supported.

The form view is the only opportunity for this field to be edited and it already has `readonly="state != 'draft'"`
see (https://github.com/OCA/stock-logistics-warehouse/blob/17.0/stock_inventory/views/stock_inventory.xml#L105)

stock_inventory/models/stock_inventory.py

@@ -127,7 +127,6 @@ class InventoryAdjustmentsGroup(models.Model):
     responsible_id = fields.Many2one(
         comodel_name="res.users",
         string="Assigned to",
-        states={"draft": [("readonly", False)]},
         readonly=True,
         help="Specific responsible of Inventory Adjustment.",
     )