Merge "Retire obsolete emulator targets and boards" into main am: 0559341e...

Merge "Retire obsolete emulator targets and boards" into main am: 0559341e am: 0a852087 am: faea3629

Original change: https://android-review.googlesource.com/c/platform/build/+/2811493



Change-Id: Ifa228df836c135bb397d871da9cba583d755f3b9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>