Merge "Update rbesetup.sh script to no longer set certain env variables" am:...

Merge "Update rbesetup.sh script to no longer set certain env variables" am: ee8e14f3 am: 2a3ace57 am: 53a984e5

Original change: https://android-review.googlesource.com/c/platform/build/+/2108567



Change-Id: I01e1b764d0168bf24b557c78fdbe6c1cdf87f823
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>