How can I delete subfolders from inbox folder?

I syncronized yahoo mail with “eM Client”. I have asked “eM Client” to creat folders on my mail account and it made a subfolder in the inbox folder. This folders is syncronized with yahoo, so I can see these subfolders in Yahoo webmail too under the inbox forder. Now I’d like to delete this folder, but I don’t know how. “eM Client” do not show this subfolder anymore. I don’t know how to delete it in yahoo.