When you offered a bottle on the market which isn't available or for any other reason not for sale anymore you can easily remove it from the market.

Open the edit page from the whisky in your sellers profile by going to market, my marketplace, whiskies and open the page of the whisky you wish to remove. 

Than select the edit button in the upper right corner of this page and select the archive button at the bottom of this page. This will remove the bottle from the market, but it will be available in your profile for an easy replacement on the market if it's for sale again.