Removing existing teams or channels from Microsoft Teams when no longer needed
Hi there Sif S,
Welcome to Microsoft Community
I'm Bobadoye and I'd be happy to help you out with your question.
To fix the issue, rename the folder in the modern experience of the SharePoint library. Renaming the folder triggers the Delete option to appear.
- Select the "More actions" (three dots) icon next to the folder, and select Rename.
- Type a new name for the folder, and select Rename.
- Select the "More actions" icon again. The Delete option should now appear.
- Select Delete to delete the folder.
You can click on the links below as a guide:
https://support.microsoft.com/office/bc37b743-0cef-475e-9a8c-8fc4d40179fb
I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further.
Best Regards,
Bobadoye