How do I delete an assignment?
Under the Remove? column, select the item(s) you would like to delete by placing a check in the box beside the item's title.
Warning: Removing an assignment with student submissions will also delete the submissions for that assignment.
Select the Delete button to confirm the removal of the assignment(s) you have selected.
Tip: Deleted assignments can be restored from the Trash tab in the Assignments tool, How do I restore deleted assignments?