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/tools/state_graph.py b/tools/state_graph.py
index 9b08638..cc70fb2 100755
--- a/tools/state_graph.py
+++ b/tools/state_graph.py
@@ -14,7 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 import optparse
 import os