In order to remove a course(s) from a learner group, you can:
1. Click on "Users" from the side navigation bar.
2. Select "Learner Groups".
3. Click on the drop-down indicated by three dots against the learner group for which the course is to be removed.
4. Choose "Courses" from the drop-down.
5. On the courses page, you can click on the drop-down indicated by three dots against the course which is to be removed.
6. Select "Remove Course"
7. Once done, click on "Remove" from the pop-up and the course will be removed from the learner group.