Not possible. The only way to remove an account is to log into it. If you cannot do this for whatever reason, then you're stuck with it forever. Bungie will not remove accounts for security reasons. [quote]Destiny Player Support and Bungie cannot modify or remove accounts linked to Bungie.net profiles. To protect player privacy and data, you must be able to log in to any linked accounts to prove ownership prior to modifying your linked account. If you no longer have access to a linked account, you will need to reach out to the specific platform’s support for assistance with account recovery options. https://help.bungie.net/hc/en-us/articles/360049498031-Destiny-2-Cross-Save-Guide[/quote]