Removed prototype for equals from Cartesian2/3/4
Removed prototype for multiplyByScalar from Cartesian2/3/4
Removed prototype for divideByScalar from Cartesian2/3/4
Removed prototype for abs from Cartesian2/3/4
Removed prototype for lerp from Cartesian2/3/4
Removed prototype for mostOrthogonalAxis from Cartesian2/3/4