Remove abandoned implementation. am: 93b5e63726

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Messaging/+/3242160

Change-Id: I491f5ce9a4a93f7295d7b1f1a46ac37204a6dced
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 4b825dc642cb6eb9a060e54bf8d69288fbee4904

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