Remove python37 and cuda37 packages in orttraing (#15041)
### Description
supplement of #14874 and #14887
### Motivation and Context
N.B.
I'm not sure if python matrix of rocm is expected (python3.7-3.9) @faxu
@snnn
(https://github.com/microsoft/onnxruntime/blob/main/tools/ci_build/github/azure-pipelines/orttraining-py-packaging-pipeline-rocm.yml)
