Clean up docs redirects - 2024-10-23

What does this MR do and why?

Removes docs redirects that are past the date recorded in their remove_date.

Parent issue: Docs project maintenance tasks, October 2024 (technical-writing#1138 - closed)

Merge request 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 merge request.