Remove entire Folder of 404 Errors through Webmaster Tools

If I have a site which have also Russian language on it: site.com/ru
And I delete the whole /ru folder
I will get a lot of 404s Errors
If they are thousands and I cannot to remove them one by one from Webmaster tools can I remove the entire /ru/ folder?
Or I need to remove all of them one by one?

See original post by passcrk2005