How To Delete A Package
Packages can be deleted at any time. If you don't have at least one active package assigned to a shipping method that requires packages, customers will be unable to check out.
Learn more about packages.

If you need to stop using a package temporarily, consider turning the status off instead of deleting it. Packages set to ‘Off’ will not be used by the shipping methods they’re assigned to. Once the package can be used again, simply change the status to ‘On’ to make it available to shipping methods.
1. Click Packages on the sidebar menu.
2. Click Edit beside the package you wish to delete.
3. Scroll to the bottom of the page, then click the Delete button.