After logging in, select the Collections link in the upper left corner of the screen. Find the course you'd like to edit, then click to open it.
From the main Collections page, click the button labeled Remove Cases. This will display a list of all the cases currently assigned to that course.
Select the case you would like to delete. In the example above, case #850 - Home Nurse Evaluation, will be deleted.
Click the Remove button in the top right of the screen. After clicking the button, it will take you back to the main course page which will display the updated list of cases assigned to that course.