To clean up outdated Google results, the strategy depends on whether you own...

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

To clean up outdated Google results, the strategy depends on whether you own the site. If you control it, delete the page and ensure it returns a proper 404 status; then, use the "Refresh Outdated Content" tool to force a recrawl