Depending on where you made the package.
If in the process, then you can use this action that you displayed on the screen. If just through the tab in the "Warehouse" item, then you can go to the operation log and find the one you need. Click on it and there will be a delete button, as an example
http://i.imgur.com/QFgIMLG.pnghttp://joxi.ru/J2bqRqpUGPMk7mWhen deleting a warehouse operation, the system will delete the manufactured product, and return the components back