Fix setup.py deps.

diff --git a/setup.py b/setup.py
index 1fe168d367fdb59227b767bc7d133d15e3780260..d7089df2f955f26d493745d6d0386329bb96357e 100755 (executable)
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,6 @@ except ImportError:
 else:
     extra = {
         'install_requires': [
-            'contextlib',
             'extras',
             'testscenarios',
             'testtools>=0.9.30',