取消短按power键做出对应的功能

frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

@@ public boolean isForegroundActivity(String package_name) {
                  cancelPendingScreenshotChordAction();
                  if (interceptPowerKeyUp(canceled || mPendingPowerKeyUpCanceled)) {
     +                //result = (result & ~ACTION_WAKE_UP) | ACTION_GO_TO_SLEEP;

这里呢，就是去掉在短按power键之后，不去实现一个对应的功能。