Remove abandoned implementation. am: 93b5e63726 am: 364eb68f5f

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

Change-Id: Ic02a0af401b5316611b81305b8cbca3a9e70815d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 4b825dc642cb6eb9a060e54bf8d69288fbee4904

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