Always use all available models in NN*Test

Fix: 135671716
Test: ./build_and_run_benchmark.sh scoring
Test: ./build_and_run_benchmark.sh inference-stress
Test: ./build_and_run_benchmark.sh model-loading-stress
Change-Id: Ie5eed9f943e9d9429efdc8aab8874611250a5ae7
4 files changed