Remove neuralnetworks_float16. am: a644d5cd49

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

Change-Id: I96a8336d2ec26dab271a32395fd7d33f72ba093b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>