tests: remove self.injected
This is in the base TestCase but is not used
by anything.  Remove it.
@@ -243,7 +243,6 @@ class TestCase(testtools.TestCase):
self.addCleanup(CONF.reset)
self.addCleanup(self._common_cleanup)
- self.injected = []
self._services = []
fake_notifier.mock_notifier(self)
@@ -317,13 +316,6 @@ class TestCase(testtools.TestCase):
def _common_cleanup(self):
"""Runs after each test method to tear down test environment."""
- # Stop any timers
- for x in self.injected:
- try:
- x.stop()
- except AssertionError:
- pass
-
# Kill any services
for x in self._services:
try:
