cleaning up some old comments

common/rectangle.go

@@ -16,19 +16,3 @@ type Rectangle struct {
 func (r *Rectangle) String() string {
 	return fmt.Sprintf("(%d,%d) (width: %d, height: %d), Enc= %d", r.X, r.Y, r.Width, r.Height, r.Enc.Type())
 }
-
-// PixelFormat describes the way a pixel is formatted for a VNC connection.
-//
-// See RFC 6143 Section 7.4 for information on each of the fields.
-// type PixelFormat struct {
-// 	BPP        uint8
-// 	Depth      uint8
-// 	BigEndian  bool
-// 	TrueColor  bool
-// 	RedMax     uint16
-// 	GreenMax   uint16
-// 	BlueMax    uint16
-// 	RedShift   uint8
-// 	GreenShift uint8
-// 	BlueShift  uint8
-// }