Greetings!
This means that your clan was reported for breaking Bungie's [url=https://www.bungie.net/7/en/Legal/CodeOfConduct]Code of Conduct[/url] and action was taken which removed the name from your clan. If you have any questions or concerns, I do believe you can speak with a Forum Ninja, a link to a list of them is below.
https://www.bungie.net/en/Groups/GroupMembers?groupId=121