Pages and sites can be removed from Google’s search results either by the webmaster of the site or by Google.
What happens after content is removed
When a page is updated or removed, it will automatically fall out of our search results. You don’t need to do anything to make this happen.
However, if you urgently need to remove content from Google's search results (for example, if you’ve already removed, updated, or blocked a page accidentally displaying confidential information like credit card numbers), you can request expedited removal of those URLs.