jacky06 4fd741d6bf Sync Sphinx requirement
1. Sync sphinx dependency with global requirements. It caps python 2 since
sphinx 2.0 no longer supports Python 2.7.
2. Remove unncessary "=="

Change-Id: I3451c44a30a2e3d4bb58d2ac512e69da0781e961
2019-06-19 17:52:24 +08:00
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2019-06-19 17:52:24 +08:00
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