First things, first. You cannot delete a product in Elliot.
Here's why: we are the merchant of record, so legally we are required to keep a full log of all transactions made by a merchant. This means you cannot delete a product associated with previous transaction.
Now, you can archive a product if you do not want that product to be actively available & sold in your stores. Archiving a product places that product in a separate category, so you will not see it in your full catalog of products.
To archive a product, you will need to go to: Products > Catalog > Check the box next to the product you want archived > Select Actions > Archive.