Select Assignments.
In the target Sakai site, select Assignments from the Tool Menu.
Select the assignment(s) to delete.
In the Remove? column, check the corresponding box(es) for the assignment folder(s) to delete.
Select Remove Selected.
Select the Remove Selected button at the bottom of the assignment listing.
Confirm the deletion.
Select the Delete button to confirm the removal of the selected assignment(s).
Warning: Removing an assignment with student submissions will also delete the submissions for that assignment.