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 am: 272abe7f am: ae886832

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



Change-Id: Id006a4374b98d4734e324403a2a3363561a37e1b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>