How do I deregister a label or change the label name?

How do I deregister a label or change the label name?

To deregister a label registered with GVL, please use the function in label.gvl under "My labels". Alternatively, there is also a form available here that you can sign and send to label@gvl. Deregistered labels are no longer displayed in the label search.

A label name that has already been registered with GVL can no longer be changed.