SkyDrive folder keeps re-adding itself to library after being removed

I'm using Windows 8.1 Pro. I use the libraries feature and one of the libraries I have is Documents, with a number of folders in it. One of those folders was called "OU Assignments" that was located inside my SkyDrive folder. I no longer needed that folder to be in the Documents library, so I removed it, but it keeps re-adding itself. Sometimes it will re-add itself to the Documents library within hours or sometimes it takes days, but it always comes back. Any idea why this is happening? How can I remove this folder from my Documents library so that it doesn't keep re-adding itself?