Undo accidental changes to build-prebuilts.sh am: 78f8c5348d

Original change: https://android-review.googlesource.com/c/platform/prebuilts/build-tools/+/2223538

Change-Id: Icf359abc7420ecdca0298045823135dec5441946
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>