Ubuntu – syslog.1 and kern.log.1 filling up with same message

So I just recently installed Ubuntu and today I discovered, that my kern.log and syslog files in /var/log/ are way to big (16.5GB and 13.0GB). I started to look into this, and discovered that the culprit was presumably the following line, which is spamed like a million time in both files.

kernel: [ 6292.136835] usb 3-1: cannot submit urb 0, error -2: endpoint not enabled 

I have absolutely no idea what causes this and I am also wondering how to stop that from happening?

Also, can I delete those two files, since they take up a lot of space and if yes how (can't right click and delete them).

EDIT: To clarify, the sound-card that caused the problem was the Kingston HyperX Amp and after not finding out on how to make it work, I returned it.