Removed AddEmpty slot from FileInterface

git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@7859 383ad7c9-94d9-4d36-a494-682f7c89f535

BasePlugin/FileInterface.hh

@@ -133,15 +133,6 @@ public:
 
 public slots:
 
-      /** \brief Create an empty object
-       *
-       * When this slot is called you have to create an object of your supported type.
-       * @return Id of the new Object
-       * \todo Add an addEmpty function with a given type as an attribute. The plugin should then create only an
-       * empty object of the given type. It can be assumed that there is only one type given at a time.
-       */
-      virtual int addEmpty() = 0;
-      
       /** \brief Load an object from the given file
        *
        * The Core will call this slot if you should load a file. The core will