Update torchvision commit from Mar 11 to Jun 11 2020 (#39970)
Summary:
Mar 11 version of TorchVision still have some Python 2 anachronisms.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39970
Differential Revision: D22034738
Pulled By: malfet
fbshipit-source-id: aa281d50072e2448a6b202061f3ae8e8b65346ad
