Make the linter happy.

Author: Luke Sneeringer

spanner/unit_tests/test_client.py

@@ -111,7 +111,6 @@ def test_admin_api_lib_name(self):
         the database and instance API objects in the GAPIC.
         """
         from google.cloud.spanner import __version__
-        from google.cloud.spanner import client as MUT
         from google.cloud.gapic.spanner_admin_database import v1 as db
         from google.cloud.gapic.spanner_admin_instance import v1 as inst
 

spanner/unit_tests/test_database.py

@@ -191,6 +191,7 @@ def test_spanner_api_property(self):
         _clients = [_client]
 
         def _mock_spanner_client(*args, **kwargs):
+            self.assertIsInstance(args, list)
             self.assertEqual(kwargs['lib_name'], 'gccl')
             self.assertEqual(kwargs['lib_version'], __version__)
             return _clients.pop(0)