Cleanup of Advocates no longer at MSFT

[Orin-Thomas]

https://developer.microsoft.com/en-us/advocates/amy-colyer
https://developer.microsoft.com/en-us/advocates/joylynn-kirui
https://developer.microsoft.com/en-us/advocates/joey-snow

[learn-build-service-prod]

Learn Build status updates of commit 4fb29eb:

❌ Validation status: errors

Please follow instructions here which may help to resolve issue.

File	Status	Preview URL	Details
	❌Error		Details

• [Error: CannotMergeCommit] Cannot merge commit 4fb29ebefd8f089187926c15c0c90c77f33c9a2d in branch orthomas-03Aug25-E of repository https://github.com/Orin-Thomas/cloud-developer-advocates into branch main (commit 56d44816775ffc3c98b88742f8c0b304b83d7ce4). Please follow this documentation: https://help.github.com/articles/resolving-a-merge-conflict-using-the-command-line/ to use git.exe to resolve you content conflicts locally and then push to remote.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.