Removed unused imports and fixed copyright notice.

/*

 * Copyright (C) 2015 The Android Open Source Project

 * Copyright (C) 2016 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

import android.graphics.Canvas;

import android.graphics.Point;

import android.hardware.display.DisplayManagerGlobal;

import android.os.Binder;

import android.os.RemoteException;

import android.util.Log;

import android.view.Display;

import android.view.Surface;