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

Merge "Retire obsolete emulator targets and boards" into main am: 0559341e am: cc7a8b26 am: f705f3b3

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



Change-Id: Id62c54bcc69445154e5d2a7adf57d68c20bc103c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>