How do I delete an assignment?
Go to the Assignments tool.
Select the Assignments tool from the tool menu of your site.
Select the assignment(s) you want to delete.
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 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 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?