Andreas Jaeger a1dec849fc Remove six usage
This repo does not support Python 2 anymore, so we don't need
six for compatibility between Python2 and 3, convert six usage to Python
3 code.

Needed-By: https://review.opendev.org/701743
Change-Id: If459ea9914274e3c93168748a949c96f72cf9254
2020-01-11 15:48:50 +00:00
..
2020-01-11 15:48:50 +00:00
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