[automerger skipped] Revert "redbull: update BOARD_API_LEVEL to T" am: 304d2fe1b0 -s ours am: eac5865ac5 -s ours am: 7a5959f72f -s ours

am skip reason: Merged-In Ica2a352d08a119a62301adbb2f501ca6854384e7 with SHA-1 ecd9d22132 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/device/google/redbull/+/22295129

Change-Id: I011816901d7d4b75dd4e2cc5a23330f3e764c78e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>