Removing an outdated page or link
Google updates its entire index regularly. When we crawl the web, we automatically find new pages, remove outdated links, and reflect updates to existing pages, keeping the Google index fresh and as up-to-date as possible.
If outdated pages from your site appear in the search results, ensure that the pages return a status of either 404 (not found) or 410 (gone) in the header. These status codes tell Googlebot that the requested URL isn't valid. Some servers are misconfigured to return a status of 200 (Successful) for pages that don't exist, which tells Googlebot that the requested URLs are valid and should be indexed. If a page returns a true 404 error via the http headers, anyone can remove it from the Google index using the webpage removal request tool. Outdated pages that don't return true 404 errors usually fall out of our index naturally when other pages stop linking to them.