Prepare for os-clinet-config to go away

We used that module in a test functional for module list, it is being absorbed
into python-openstacksdk and having it listed in this test breaks -tips jobs.

Change-Id: I98fdf5a5d1b3c6e30cb4c5f5fec3dd8e43e53145

Author: Dean Troyer

openstackclient/tests/functional/common/test_module.py

@@ -27,7 +27,6 @@ class ModuleTest(base.TestCase):
                'openstack']
 
     LIBS = ['osc_lib',
-            'os_client_config',
             'keystoneauth1']
 
     def test_module_list(self):