You have complete control over the items in your Ongoing Promoter Campaign. Removing items is easily done from your Promoter tab.
Please note: Deleting all Upcoming Promotions will not cancel your Ongoing Campaign, your current promotion will simply repeat until a new item is added.
Step 1: Log into your profile and click the Promoter icon
Step 2: Click Manage Promotions
Step 3: Click the Campaigns tab and then See full campaign
Step 4: Find the item you'd like to delete and hit the Trash button