Fix pyflakes warnings

Author: mnaberez

supervisor/tests/base.py

@@ -1,9 +1,7 @@
 _NOW = 1151365354
 _TIMEFORMAT = '%b %d %I:%M %p'
 
-import errno
 import functools
-import os
 
 from supervisor.compat import Fault
 from supervisor.compat import as_bytes
@@ -235,7 +233,6 @@ def mktempfile(self, prefix, suffix, dir):
         return self.tempfile_name
 
     def remove(self, path):
-        import os
         if self.remove_exception is not None:
             raise self.remove_exception
         self.removed.append(path)

supervisor/tests/test_process.py

@@ -1448,7 +1448,7 @@ def test_transition_exited_to_starting_condit_fls_supervisor_running(self):
     def test_transition_backoff_to_starting_supervisor_stopping(self):
         from supervisor import events
         emitted_events = []
-        events.subscribe(events.ProcessStateEvent, lambda x: L.append(x))
+        events.subscribe(events.ProcessStateEvent, lambda x: emitted_events.append(x))
         from supervisor.states import ProcessStates, SupervisorStates
         options = DummyOptions()
         options.mood = SupervisorStates.SHUTDOWN
@@ -1490,7 +1490,7 @@ def subscriber(e):
     def test_transition_backoff_to_starting_supervisor_running_notyet(self):
         from supervisor import events
         emitted_events = []
-        events.subscribe(events.ProcessStateEvent, lambda x: L.append(x))
+        events.subscribe(events.ProcessStateEvent, lambda x: emitted_events.append(x))
         from supervisor.states import ProcessStates, SupervisorStates
         options = DummyOptions()
         options.mood = SupervisorStates.RUNNING