SCREENSHOT: Remove items on an order that have ZERO items to receive

On the Orders tab, select the order you are working with on the Equipment Order screen.  Then select Equipment Order Detail at the bottom of the screen

Select Search to populate the order's line items.  Select the line item you would like to remove; then select Update Equipment Order Detail.

At the bottom of the Update Equipment Order Detail screen, find the Status field and update to Cancelled.  SAVE.