Hi Erik,
Revising these listings from SixBit should remove the link. We made the change here back in April 2017 where only a tagline picture is included, and no link. Any versions after that date should automatically fix them on submission or revision.
The other option is to opt in to tag removal on your account and then revising, but that shouldn’t be necessary since they don’t include links anymore.
If you still can’t get them removed, open a ticket with support and they’ll help you. It may be that you need a newer version of SixBit.
John Manning, Senior Developer