Remove pixel dimensions from camera

The scene computes those and gives them to the camera for each ray

src/camera.cc

@@ -22,41 +22,6 @@ Camera::~Camera()
 { }
 
 
-/*
- * Camera::get_pixel_width --
- * Camera::set_pixel_width --
- * Camera::get_pixel_height --
- * Camera::set_pixel_height --
- *
- * Get and set pixel width and height.
- */
-int
-Camera::get_pixel_width()
-    const
-{
-    return pwidth;
-}
-
-void
-Camera::set_pixel_width(const int &w)
-{
-    pwidth = w;
-}
-
-int
-Camera::get_pixel_height()
-    const
-{
-    return pheight;
-}
-
-void
-Camera::set_pixel_height(const int &h)
-{
-    pheight = h;
-}
-
-
 /*
  * Camera::get_width --
  * Camera::set_width --

src/camera.h

@@ -18,12 +18,8 @@ class Camera
 {
 public:
     Camera();
-    ~Camera();
+    virtual ~Camera();
 
-    int get_pixel_width() const;
-    void set_pixel_width(const int &w);
-    int get_pixel_height() const;
-    void set_pixel_height(const int &h);
     const Vector3 &get_width() const;
     void set_width(const Vector3 &w);
     const Vector3 &get_height() const;