Apr 11
3
If you have a lot of urls that you don’t want in Google anymore, you can make the pages return a 404 and wait for Googlebot to recrawl/reindex the pages. This is often the best way. You can also block out an entire directory or a whole site in robots.txt and then use our url removal tool to remove the entire directory from Google’s search results
See original here:
Overdoing url removals