Retire device/generic/mini-emulator-x86_64 am: 0914fc21da am: 04d99cf882 am: 3aaa50ca70

Original change: https://googleplex-android-review.googlesource.com/c/device/generic/mini-emulator-x86_64/+/11494057

Change-Id: I482176b36cb4a55162d4f785d88684dcc90f14a9
tree: 4b825dc642cb6eb9a060e54bf8d69288fbee4904

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