Merge "Retire obsolete (32bit-only) emulator targets and boards" into main am:...

Merge "Retire obsolete (32bit-only) emulator targets and boards" into main am: bfe2cc1e am: 50aec24f am: 090013f3

Original change: https://android-review.googlesource.com/c/platform/build/+/2784390



Change-Id: I2ab2ec9913559f88c39d55ee0078c11abf441248
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>