Earlier we extracted a common superclass InputEvent from KeyEvent
and MotionEvent. During this process, getDeviceId() and mDeviceId
were moved to the superclass. The API change tracking was unable
to automatically figure out that the method had just been moved up
to the superclass (still binary compatible) so we patched up 9.xml
manually to fool it. Unfortunately mDeviceId slipped in there
when it should not have since it should have been marked with @hide.
This change just removes mDeviceId.
Change-Id: I5fca14c8dc6f98952b8afbdb6e034824a22bdb1d
abeea05b30