Revert "Update build-tools to ab/3050982"

This reverts commit 5a966750a5d27b3eb3451189ac070df6a24a7758. 
It's breaking some TARGET_BUILD_APPS builds.

Change-Id: I6558e5497a712563da53fa059575035eb00a9aa1
6 files changed
tree: 3e569a3a50211ac34c1041c7cb573fb662003fd8
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh