Remove comment that's only relevant for the underlying SkMatrix. Matrix has constructors.

/**

/**

 * The Matrix class holds a 3x3 matrix for transforming coordinates.

 * The Matrix class holds a 3x3 matrix for transforming coordinates.

 * Matrix does not have a constructor, so it must be explicitly initialized

 * using either reset() - to construct an identity matrix, or one of the set..()

 * functions (e.g. setTranslate, setRotate, etc.).

 */

 */

public class Matrix {

public class Matrix {