You can decide whether or not a product you are selling is available in your store.
To do so, navigate to Partner Center > Marketplace > Products > Select the product you want to remove/add from your Store > Check yes/no to add/remove the product from the Store.
If you have multiple Markets, you can select whether or not the product will be available in the Store in a particular Market.
Please note that only the products that you have started selling will show under the Products tab. Learn how to start selling a product.