Revert "[Doc] Document existing runtime env's container support (#19076)" (#19160)
Revert "[Doc] Document existing runtime env's container support (#19076)" (#19160)

This reverts commit 4beba3f7270bc2510cd8b86672986465bc472f1a.
ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray