Clearing old search results is all about access. If you control the site,...

https://sierra-wiki.win/index.php/How_to_Fix_the_Ghosting_Problem:_Removing_Old_AMP_Pages_from_Google

Clearing old search results is all about access. If you control the site, update the page and request a crawl; Google will eventually drop the old snippet. For pages you don’t own, use the "Refresh Outdated Content" tool