Remove neuralnetworks_float16. am: a644d5cd49 am: 2715ab360c am: 8ed3cb9f7b

Original change: https://android-review.googlesource.com/c/platform/test/mlts/benchmark/+/2322733

Change-Id: If3f9b469ee4e6f527844fc5cb55f80d315c095a6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>