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

https://dibz.me/blog/whats-the-safest-way-to-remove-a-page-without-causing-a-bigger-seo-mess-1073

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 For pages you don’t own, use the "Refresh Outdated Content" tool