If for some reasons you uploaded a wrong file, you can now delete them by selecting it from the list and then press on the button delete:
You can select as many document as you want, and then after pressing on "Delete" they will be removed from the list.
Please be aware that there is no warning message for this operation.
After pressing the "Delete" button the documents will be removed from your list. If for some reasons you deleted the wrong document(s), you will have to updated it again.