Use unittest.mock instead of mock

The mock third party library was needed for mock support in py2
runtimes. Since we now only support py36 and later, we can use the
standard lib unittest.mock module instead.

Change-Id: Ib169e3deb7ddb2bc93a206ebec4043552281aa7f

1 files changed, 1 insertions, 1 deletions

diff --git a/taskflow/test.py b/taskflow/test.py
index a9cce35..a5d880a 100644
--- a/taskflow/test.py
+++ b/taskflow/test.py
@@ -16,9 +16,9 @@
 
 import collections
 import logging
+from unittest import mock
 
 import fixtures
-import mock
 from oslotest import base
 import six