Perform the following steps to delete a document set from Project Center.
Deleting a document set does not delete or change the actual source files in the document set - the document set only points to the source files.
1. If you are not already there, open the Project Document Sets activity center (shown below) by clicking Document Sets from the Activities list or the Project Home activity center.
2. Select the document set from the list that you want to delete.
3. Click Delete from the Tasks panel.
4. Click Yes when the message appears to confirm the deletion, as shown here: