Remove backward compatibility flag am: d1bedc4e64

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1413548

Change-Id: Idf1c2240e631e3cb132c19c7063deea945764b33
tree: f1f747598294232662c15b750033b8515633f271
  1. staticlibs/