removed data storage from input/output parameters

These will be held in the renderer structure from now on, not in the nodes
themselves. The nodes will serve more as a blueprint.

app/node/input.h

@@ -76,11 +76,6 @@ public:
    */
   Node* get_connected_node();
 
-  /**
-   * @brief Get currently stored value
-   */
-  const QVariant& value();
-
   /**
    * @brief Calculate what the stored value should be at a certain time
    */
@@ -91,13 +86,6 @@ public:
    */
   void set_value_at_time(const rational& time, const QVariant& value);
 
-  /**
-   * @brief Set the value at a given time
-   */
-  void set_stored_value(const QVariant& value);
-
-  QVariant get_realtime_value_of_connected_output();
-
   /**
    * @brief Return whether keyframing is enabled on this input or not
    */
@@ -182,11 +170,6 @@ private:
    */
   QVariant maximum_;
 
-  /**
-   * @brief Internal stored value
-   */
-  QVariant stored_value_;
-
 };
 
 #endif // NODEINPUT_H