Remove document (pytorch_caffe2_docker.md) about deprecated onnx-docker, because going forward we should not encourage users to use a deprecated tool. For other links to onnx-docker in README.md, I think it's fine to keep them since they are all notebooks as examples.
Description
Remove document (pytorch_caffe2_docker.md) about deprecated onnx-docker, because going forward we should not encourage users to use a deprecated tool. For other links to onnx-docker in README.md, I think it's fine to keep them since they are all notebooks as examples.
Use main branch for ONNX instead.
Motivation and Context
https://github.com/onnx/onnx-docker was just deprecated recently. Related sentences in the documents should be updated.