Fix CI failure: temporarily disable real model tests from onnx repo (#14606)
### Description
<!-- Describe your changes. -->
To faster unblock pipeline failure globally, disable these real models
tests from onnx repo for now. Meanwhile, we are trying to move these
models to Azure.
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
https://github.com/onnx/onnx/issues/4857 these models in onnx repo are
broken. They are setup 4 years ago and the owner of these AWS instances
is unfound.