Some time ago I thought myself smart and some how added shred to "open with... " for almost very file type. Now I found a better way namely a script to shred trashcan content. Now I want to clean up file association and remove all "open with shred". I am sure I did not add this one by one manually and I and want them to disappear from every file type. But since I forgot how I added it, I am not able to reverse it. Can you help me?

I use kde 4.14.2

look at ~/.local/share/applications/mimeapps.list