Remove duplicate test definitions

A few functions were duplicate, apparently merge errors.
Remove them.

Change-Id: Ifa23eb1fe5a5782101491be6b90ee9bed1e41b1b

tests/test_shell.py

@@ -78,9 +78,6 @@ class ShellTest(utils.TestCase):
             os.environ = _old_env
         return out
 
-    def test_help_unknown_command(self):
-        self.assertRaises(exceptions.CommandError, shell, 'help foofoo')
-
     def test_help_no_args(self):
         do_tenant_mock = mock.MagicMock()
         with mock.patch('keystoneclient.shell.OpenStackIdentityShell.do_help',

tests/v2_0/fakes.py

@@ -381,12 +381,6 @@ class FakeHTTPClient(fakes.FakeClient):
                 "id": "1"}}
         return (200, body)
 
-    def post_OS_KSADM_roles(self, **kw):
-        body = {"role":
-               {"name": "new-role",
-                "id": "1"}}
-        return (200, body)
-
     def get_OS_KSADM_roles(self, **kw):
         body = {"roles": [
                 {"id": "10", "name": "admin"},