How do I delete all items in the Conversion Queue?

Server Version#: 1.41.0.8930

I accidently optimized an entire library with thousands of items and I am trying to find a way to remove them but it looks like I have to click the X on each one and then click the Remove button.

All the items are in the Conversion Activity list but nothing is showing in Optimized versions. I was hoping it would show the grouping in there so I could delete all of them but there is nothing…

Does it have to transcode at least one for it to show up there?

There is no solution to this? I let a few complete to see if anything shows in the Optimised Versions page but still there is nothing