Revert "Fixed 19895 -- Made second iteration over invalid queryset raise an exception too"

This reverts commit 2cd0edaa477b327024e4007c8eaf46646dcd0f21.
This commit was the cause of a memory leak. See ticket for more details.
Thanks Anssi Kääriäinen for identifying the source of the bug.

1 files changed, 1 insertions, 6 deletions

diff --git a/tests/basic/tests.py b/tests/basic/tests.py
index a8005baca7..ccbb9bd423 100644
--- a/tests/basic/tests.py
+++ b/tests/basic/tests.py
@@ -3,7 +3,7 @@ from __future__ import absolute_import, unicode_literals
 from datetime import datetime
 import threading
 
-from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned, FieldError
+from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned
 from django.db import connections, DEFAULT_DB_ALIAS
 from django.db.models.fields import Field, FieldDoesNotExist
 from django.db.models.query import QuerySet, EmptyQuerySet, ValuesListQuerySet
@@ -689,11 +689,6 @@ class ModelTest(TestCase):
         with self.assertNumQueries(0):
             self.assertEqual(len(Article.objects.none().distinct('headline', 'pub_date')), 0)
 
-    def test_invalid_qs_list(self):
-        qs = Article.objects.order_by('invalid_column')
-        self.assertRaises(FieldError, list, qs)
-        self.assertRaises(FieldError, list, qs)
-
 class ConcurrentSaveTests(TransactionTestCase):
     @skipUnlessDBFeature('test_db_allows_multiple_connections')
     def test_concurrent_delete_with_save(self):