Skip same tests in ONNX Python3 CI as in Python2 (#31827)
Summary:
resolve https://github.com/pytorch/pytorch/issues/31103
vgg models were not tested in Python2 but are turned on in Python3
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31827
Reviewed By: houseroad
Differential Revision: D19274123
Pulled By: bddppq
fbshipit-source-id: c48beb574e8b03b2adbd6c9d8ca3f600bee93024
