Getting old info out of Google results comes down to one question: do you own...

https://reportz.io/technology/how-do-i-keep-dead-urls-from-creating-a-bad-user-experience-in-search/

Getting old info out of Google results comes down to one question: do you own the site? If it’s your site, fix the page and request a crawl in Search Console. If you don’t own it, use the "Refresh Outdated Content" tool to strip snippets