Start by selecting the campaign which contains the product you want to remove. Select the specific section in which the no longer desired product appears such as: Availability.
You can then edit this list:
- Click on the notepad and pen icon.
- Click "remove" on the specific item you no longer want to appear in the campaign.
Note: This will not remove the item from the data base but will remove it from the users view of this section. Meaning if you ever need to re-add the item, it will still be in the product list.