Drop the official SDK 16.

The SDK prebuilt SDK is downloaded by the Eclipse Android SDK manager.

Change-Id: I99ab22c9e12caa9376036952de5d65e1722f2508
diff --git a/16/android.jar b/16/android.jar
index 8f5e785..0780a27 100644
--- a/16/android.jar
+++ b/16/android.jar
Binary files differ