Remove outdated documentation

What does this MR do and why?

• Removes outdated documentation as it is no longer needed.
• Closes #367357 (closed)

Screenshots or screen recordings

Not needed.

How to set up and validate locally

Not needed.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.