Fixed tests from having multiple arguments for INSTALLED_APPS.

Author: Michael Barr

run_tests.py

@@ -17,13 +17,6 @@
     if VERSION < (1, 6):    # pragma: no cover
         test_runners_args = {
             'TEST_RUNNER': 'discover_runner.DiscoverRunner',
-            'INSTALLED_APPS': (
-                'django.contrib.contenttypes',
-                'django.contrib.auth',
-                'discover_runner',
-                'timezone_utils',
-                'tests',
-            )
         }
     settings.configure(
         DATABASES={
@@ -35,6 +28,7 @@
         INSTALLED_APPS=(
             'django.contrib.contenttypes',
             'django.contrib.auth',
+            'discover_runner',
             'timezone_utils',
             'tests',
         ),