Removed unused variable.

    def test_proxy_model_defer_with_selected_related(self):

        # Regression for #22050

        item = Item.objects.create(name="first", value=47)

        related = RelatedItem.objects.create(item=item)

        RelatedItem.objects.create(item=item)

        # Defer fields with only()

        obj = ProxyRelated.objects.all().select_related().only('item__name')[0]

        with self.assertNumQueries(0):