[FIX] sale_automatic_workflow_payment_mode: Fix tests

Removing incorrect code in tests

Author: pedrobaeza

sale_automatic_workflow_payment_mode/tests/test_automatic_workflow_payment_mode.py

@@ -49,11 +49,5 @@ def test_full_automatic(self):
         self.assertEqual(sale.state, 'sale')
         self.assertTrue(sale.picking_ids)
         self.assertTrue(sale.invoice_ids)
-        invoice = sale.invoice_ids
-        self.assertEqual(invoice.state, 'paid')
-        picking = sale.picking_ids
-        picking.force_assign()
-        picking.move_lines.write({'quantity_done': 1})
-        picking.button_validate()
-        self.progress()
-        self.assertEqual(picking.state, 'done')
+        self.assertEqual(sale.invoice_ids.state, 'paid')
+        self.assertEqual(sale.picking_ids.state, 'done')