Getting rid of outdated Google results depends on one thing: do you control the...

https://wiki-spirit.win/index.php/Google_shows_both_www_and_non-www_pages:_How_to_clean_up_the_mess

Getting rid of outdated Google results depends on one thing: do you control the site? If you own the domain, fix the page and use the "Removals" tool in Search Console to clear the cache