[FIX] product_supplierinfo_for_customer_sale: Remove offending test

There's no price computation on the module, so there shouldn't be any test regarding
this topic, or it can fail in integration tests.

Author: pedrobaeza

product_supplierinfo_for_customer_sale/tests/test_product_supplierinfo_for_customer_sale.py

@@ -68,6 +68,3 @@ def test_product_supplierinfo_for_customer_sale(self):
         self.assertEqual(
             line.product_uom_qty, self.supplierinfo.min_qty,
             "Error: Min qty was not passed to the sale order line")
-        self.assertEqual(
-            line.price_unit, self.supplierinfo.price,
-            "Error: Price was not computed as expected in the sale order line")