In order to delete a learner group, you can:
1. Select "Users" in the side navigation bar.
2. Click on "Learner Group"
3. Click on the drop-down indicated by three dots against the learner group which is to be deleted.
4. Select "Delete" button from the drop-down.
5. Confirm deletion of learner group in the by clicking "Delete" button in the pop-up.
The learner group will get deleted once this is done.