Remove information from Google

If you want to remove content from Google’s search results, that content should first be removed from the web or blocked from search engines.[...]

To remove content (including a snippet, title, page content, or an entire URL or site) from search results, the site owner-whether it’s you or somebody else-has a few options. The site owner can remove the concerning information from the page, take the page down from the web entirely, or indicate that Google shouldn’t crawl or index the page. There are varying requirements depending on the type of content you want to remove, and these are described below.

After these changes are made and Google has crawled the site again, the content should naturally drop out of the Google index.

However, if you need to urgently remove your site’s content from search results, or if you need to remove Google’s cached copy of a page that has already changed on the website or stop Google from showing results for a page that has been taken down completely, you can use Google’s removal tool to expedite the process. To use the tool, you’ll need to follow certain requirements, detailed below.

* If you own the site, you’ll need to make the changes to your website yourself and then request removal of the problematic page from Google’s search results using the URL removal tool in Webmaster Tools.
* If you don’t own the site, your first step is to contact the site’s webmaster and request that the content is removed. (Note that depending on the type of removal—see below—some other changes may also be necessary). Once the changes have been made, you can request removal of the content from appearing as a cache copy or snippet in Google’s search results by using the public URL removal tool. (It bears repeating: The site owner—whether it’s you or somebody else—must have first made the required changes to the site, or this process will not work to remove the content from search results.)

Check out Google’s Webpage removal request tool:

via google