Playlist won't disappear

[thomashunt_]

So ages ago there was some Summer Hits UK playlist (I think) maintained by Spotify, I had it followed, they removed it, now it shows up in my sidebar as "Loading.... by Spotify". Unfollowing won't make it go away, clicking it opens a blank page. 

I know this isn't a major problem but it's annoying and I thought I'd see if there are any solutions. Yes I've tried reinstalling the client. Attached image shows what I mean.