[CI] Remove unnecessary sample YAML symbolic links

[kevin85421]

Why are these changes needed?

Fix the issue at https://github.com/ray-project/kuberay/actions/runs/8945694943/job/24575079930 that prevents the KubeRay website from being deployed with the latest commit.

Related issue number

Checks

• [ ] I've made sure the tests are passing.
• Testing Strategy
  • [ ] Unit tests
  • [ ] Manual tests
  • [ ] This PR is not tested :(