onnxruntime

d461ca9d - Update onnxruntime binary size checks ci pipeline's docker image (#23405)

Update onnxruntime binary size checks ci pipeline's docker image (#23405) 1. Update onnxruntime binary size checks ci pipeline's docker image. Use a different docker image that is not manylinux based. The new one is smaller. 2. Add flatbuffers tools/ci_build/requirements/pybind/requirements.txt 3. Delete tools/ci_build/github/azure-pipelines/py-package-build-pipeline.yml. The pipeline was for generating packages for Olive, but it went unused. And the content is highly duplicated with our official python packaging pipeline. 4. A lot of YAML files reference pypa/manylinux git repo but do not use it. This PR removes the references.