Here's a step-by-step guide for you to delete a category you don't need anymore.
1. Navigate to Catalog from the left sidebar.
2. Expand the Categories menu and select the store where the needed category is located.
3. Select the category where you need to delete and click the Edit icon.
4. Click the Delete Category link.
5. Click Yes to confirm the action and that's it, your category will be deleted!
That's it! Learn more about deleting departments.