Upgrade to CUDA 11.7 and remove V1 workflows (#1398)
Summary:
Define the default Python version in `python_utils.py`.
Define the default CUDA version in `cuda_utils.py`.
To upgrade CUDA version:
1. Change the default CUDA version in `utils/cuda_utils.py`
2. Change the default CUDA version in the Dockerfile.
Fixes https://github.com/pytorch/benchmark/issues/1390
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1398
Reviewed By: atalman
Differential Revision: D43086532
Pulled By: xuzhao9
fbshipit-source-id: 04b99af060be7dec951ac23558cef01e99de4472
