@KevinJohnsonNov 07.2013 — #It may be possible that you have forgotten to remove it and Google crawler has crawled those pages. Now if you want to remove it then follow below guidelines:
In Google webmaster tools go to the website overview, Click Google Index, then Remove URLs and enter the URL you want to remove.
@nathanmiller99Nov 07.2013 — #Yes it is the nice way for removing urls and also if your some urls are useful and you still don't want to crawl them, then you can block them by using robots.txt file.
@kpkarthikNov 08.2013 — #Google would read all URL in the website including unwanted URL and broken URL.So we should remove the broken and unwanted URL from the website for getting better result.So,if we have add the unwanted URL in robot.txt file,Google does not read that URL.Otherwise delete the unwanted URL from the website by using disavow tool in web master account.
@kiarafernandesNov 08.2013 — #Google would read all URL in the website including unwanted URL and broken URL.So we should remove the broken and unwanted URL from the website for getting better result.So,if we have add the unwanted URL in robot.txt file,Google does not read that URL.Otherwise delete the unwanted URL from the website by using disavow tool in web master account.[/QUOTE]
Yes karthik is right it would be broken links in your sites. review your content and check is there any unwanted links.