This article will show you how to remove a Product Category.
Go to Manager > Categories > Product Categories.
Check the box beside each Product Category you wish to archive, then click the Archive button.
Note: Archiving a Product Category will not remove any existing active products from your current list of products. It will only remove the ability to assign products to that Product Category.
Restoring an Archived Category
To restore an archived Product Category, toggle the Show switch from Active to Archived
Then, check the box beside each Product Category you wish to restore, and click Restore.