Yes, you can delete a package. However, please note that deleting a package will automatically delete all hosting accounts assigned to it.
Steps to Delete a Package
1. Log in to WHM using:
domainname/whm
2. Search for Delete Package and click on it

3. Select the package you want to delete

4. Proceed with the deletion
Important:
Be sure you understand the implications before proceeding, as this action cannot be undone, and all associated hosting accounts will be permanently removed.