Remove unnecessary test

As noted, we're simply testing the default behavior of Python 3 in this
test. Remove it, now that this is the only version(s) of Python 3 we
have to worry about.

Change-Id: I5f07343df8334457d907086033d5685f59c0bf0e
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>

openstackclient/tests/unit/test_shell.py

@@ -15,7 +15,6 @@
 
 import importlib
 import os
-import sys
 from unittest import mock
 
 from osc_lib.tests import utils as osc_lib_test_utils
@@ -412,32 +411,3 @@ class TestShellCli(TestShell):
             "network_api_version": LIB_NETWORK_API_VERSION
         }
         self._assert_cli(flag, kwargs)
-
-
-class TestShellArgV(TestShell):
-    """Test the deferred help flag"""
-
-    def test_shell_argv(self):
-        """Test argv decoding
-
-        Python 2 does nothing with argv while Python 3 decodes it into
-        Unicode before we ever see it.  We manually decode when running
-        under Python 2 so verify that we get the right argv types.
-
-        Use the argv supplied by the test runner so we get actual Python
-        runtime behaviour; we only need to check the type of argv[0]
-        which will always be present.
-        """
-
-        with mock.patch(
-                self.shell_class_name + ".run",
-                self.app,
-        ):
-            # Ensure type gets through unmolested through shell.main()
-            argv = sys.argv
-            shell.main(sys.argv)
-            self.assertEqual(type(argv[0]), type(self.app.call_args[0][0][0]))
-
-            # When shell.main() gets sys.argv itself it should be decoded
-            shell.main()
-            self.assertEqual(type(u'x'), type(self.app.call_args[0][0][0]))