Courses are deleted in the course properties.
- Go in to the course you want to delete
 - Click Settings (you will find this under the More tab in the Course menu)
 - Click Course Properties and Features
 - Click the ellipsis (...) 
 - Select delete
 - You will be asked to confirm that you want to delete the course or cancel the action.
 - Confirm by clicking the Delete button.
 
If you have accidentally deleted a course, you can restore it.
- Click the Admin tab in the main menu
 - Select trash can
 
- Select Course
 - Click Restore