Remove Product File(s)
Considering that you have already assigned some downloadable files to products, you might need to remove some files at some stage.
In the “Files” section of the plugin, tick off the files which you would like to remove permanently. With the appopriate product files selected, choose “Delete” from the select drop down menu in the blue, top navigation and hit the “Execute” button next to it.
A confirmation message/dialog will be shown. Upon clicking the “Ok” button in this dialog, the selected files will be permanently removed from the database while the actual files will be removed/unlinked from the server as well.