remove fips images from documentation until OpenSSL fix is available

[pdabelf5]

Proposed changes

Remove FIPS images from documentation until https://github.com/nginxinc/kubernetes-ingress/issues/5914 is resolved

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• [ ] I have read the CONTRIBUTING doc
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked that all unit tests pass after adding my changes
• [ ] I have updated necessary documentation
• [ ] I have rebased my branch onto main
• [ ] I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[github-actions[bot]]

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