Removing existing teams or channels from Microsoft Teams when no longer needed
Hi KarthikeyaShastry,
Have a good day. Thank you for the posting into the forum community.
As per your mentioned description, may I please re-confirm from your side that whether your concern is for removing Team administrator role for MS Teams?
If so, generally if any user has Team administrators role for MS Teams, global IT admin can manage or remove such kind of role from their end from admin center under Microsoft 365 Business or Education kind of subscription.
Below are the information article for the reference:
If your concern is totally different, please feel free to provide us some brief information scenario or situation so that I can further provide you information accordingly.
Regards,
Darpan