Remove mox

It's not used at all, and we've been trying to remove it from OpenStack
for a while.

Change-Id: Icc8112af0c512cf6040befcbeadd5c3e55b03401

keystoneauth1/tests/unit/utils.py

@@ -17,7 +17,6 @@ import uuid
 
 import fixtures
 import mock
-from mox3 import mox
 import requests
 from requests_mock.contrib import fixture
 import six
@@ -42,7 +41,6 @@ class TestCase(testtools.TestCase):
 
     def setUp(self):
         super(TestCase, self).setUp()
-        self.mox = mox.Mox()
         self.logger = self.useFixture(fixtures.FakeLogger(level=logging.DEBUG))
         self.time_patcher = mock.patch.object(time, 'time', lambda: 1234)
         self.time_patcher.start()
@@ -51,8 +49,6 @@ class TestCase(testtools.TestCase):
 
     def tearDown(self):
         self.time_patcher.stop()
-        self.mox.UnsetStubs()
-        self.mox.VerifyAll()
         super(TestCase, self).tearDown()
 
     def stub_url(self, method, parts=None, base_url=None, json=None, **kwargs):

test-requirements.txt

@@ -9,7 +9,6 @@ discover
 fixtures>=1.3.1
 keyring!=3.3,>=2.1
 mock>=1.2
-mox3>=0.7.0
 oauthlib>=0.6
 oslo.config>=2.6.0 # Apache-2.0
 oslosphinx>=2.5.0 # Apache-2.0