Remove approval functionality

[Ross McAllister (rmca14)]

No description provided.

[learn-build-service-prod]

Learn Build status updates of commit e34e533:

✅ Validation status: passed

File	Status	Preview URL	Details
.github/workflows/MSecD-RequireWriterReview.yml	✅Succeeded	n/a (file deleted or renamed)
authorized-approvers.txt	✅Succeeded	n/a (file deleted or renamed)

For more details, please refer to the build report.

[prmerger-automator]

PRMerger Results

Issue	Description
Deleted File(s)	This PR deletes Markdown or YAML files owned by another author, or json file(s). The pull request must contain a comment from the pull request author confirming that all the file deletions are intentional before the pull request can be merged.
Yaml File(s)	This PR includes changes to .yml file(s) owned by another author.
File Change Percent	This PR contains file(s) with more than 30% file change.
Unapproved file extension(s)	This PR contains file types that are not supported in the repo. The only supported file types are jpg, gif, png, json, svg and md.
Repository root file	This pull request contains a file submitted to the root of the repository.