HOW TO MAKE ITEMS INACTIVE
You can deactivate your items that are not in use. They will no longer appear on the list of items and in the search list when adding items to style item list. However, you can always re-activate an item if needed.
In the Items section:
1) Double-click the item header of the item you want to deactivate
2) Change the item status to Inactive and click the small green icon to save
Find inactive items
You will be able to find inactive styles in the filter under 'States'.