You can delete/archive any of your courses in three steps:

1) Go to the 'Courses' page, and 'Your courses' tab.

2) Click 'Archive Courses' in the top right corner.
​

3) Click the bin icon on the courses you would like to archive.
​

If you change your mind and want the course again, all you need to do is add the course to your account. Any previous study data will be restored with the class.