Removing an Item from the Production Queue
More about Production
Playing Stars!
⇒ Select an item in the queue, then click the Remove button or double-click on the item in the queue.
⇒ Keep clicking the Remove button or double-clicking on the item name to remove additional units.
Speed Removal
Pressing CTRL+SHIFT when clicking on the Remove button will remove as many of that item as possible. This also works if you press CTRL+SHIFT and double click on the item.