Removing unneeded tearDown code.

Author: honzakral

tests/modeltests/proxy_models/tests.py

@@ -368,10 +368,6 @@ def setUp(self):
  management.call_command('loaddata', 'myhorses.json', verbosity=0,
  commit=False)
 
- def tearDown(self):
- TrackerUser.objects.all().delete()
- Issue.objects.all().delete()
-
  def test_cascade_delete_proxy_model_admin_warning(self):
  """
  Test if admin gives warning about cascade deleting models referenced