siyingchun ef12aca2eb Modified code Pyflakes warning.
File netns_cleanup_util.py:
W402 'os' imported but unused
W402 'traceback' imported but unused

Change-Id: I439341d82198895412b1610cab607396c559ccb0
2012-09-08 22:57:43 +08:00
..
2012-09-08 22:57:43 +08:00
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