removed unnecessary inputVal and workingVal from model representation.
removed unnecessary inputVal and workingVal from model representation.

silky/sketch-n-sketch,florence/sketch-n-sketch,UIKit0/sketch-n-sketch,ravichugh/sketch-n-sketch,ravichugh/sketch-n-sketch,florence/sketch-n-sketch,UIKit0/sketch-n-sketch,ravichugh/sketch-n-sketch,ravichugh/sketch-n-sketch,ravichugh/sketch-n-sketch,florence/sketch-n-sketch,ravichugh/sketch-n-sketch,silky/sketch-n-sketch,silky/sketch-n-sketch,UIKit0/sketch-n-sketch