rm: unneseccary interface file

source/modules/d3/pdfdocuments/src/Modules/Application/Model/pdfDocuments_interface.php

@@ -1,9 +0,0 @@
-<?php
-require('deliverynotePdf.php');
-require('invoicePdf.php');
-
-interface pdfDocuments_interface{
-  public function genPdf($sFilename, $iSelLang = 0, $target = 'I');
-  public function setOrder(\OxidEsales\Eshop\Application\Model\Order $order);
-  public function getOrder();
-}