Removed an obsolete unicity check.

It doesn't account for app configs.

Refs #21679.

1 files changed, 0 insertions, 21 deletions

diff --git a/tests/settings_tests/tests.py b/tests/settings_tests/tests.py
index 2225862f7f..9b2f5c79fa 100644
--- a/tests/settings_tests/tests.py
+++ b/tests/settings_tests/tests.py
@@ -292,27 +292,6 @@ class TestComplexSettingOverride(TestCase):
                 'Overriding setting TEST_WARN can lead to unexpected behaviour.')
 
 
-class UniqueSettingsTests(TestCase):
-    """
-    Tests for the INSTALLED_APPS setting.
-    """
-    settings_module = settings
-
-    def setUp(self):
-        self._installed_apps = self.settings_module.INSTALLED_APPS
-
-    def tearDown(self):
-        self.settings_module.INSTALLED_APPS = self._installed_apps
-
-    def test_unique(self):
-        """
-        An ImproperlyConfigured exception is raised if the INSTALLED_APPS contains
-        any duplicate strings.
-        """
-        with self.assertRaises(ImproperlyConfigured):
-            self.settings_module.INSTALLED_APPS = ("myApp1", "myApp1", "myApp2", "myApp3")
-
-
 class TrailingSlashURLTests(TestCase):
     """
     Tests for the MEDIA_URL and STATIC_URL settings.