Retire LOCAL_NDK_VERSION.

Bug: 6932421
Change-Id: If9aef724e8323ba0c9b94a6464cf2953b60fdcc3
am 8a81a414: Retire LOCAL_NDK_VERSION.

* commit '8a81a414914781498381ad24153c5e6c4a7ed525':
  Retire LOCAL_NDK_VERSION.
Merge tag 'android-4.3_r2.1' into jellybean-mr2.1

Android 4.3 release 2.1