message: Remove some op test.
diff: @@ -151,40 +151,6 @@ static void BM_Momentum(int iters, int params) {
  }
  BENCHMARK(BM_Momentum)->Arg(128 << 10)->Arg(256 << 10);
  -static void KerasMomentum(int32 n, Graph** init_g, Graph** train_g) {
  - TensorShape shape({n});
  - {
  - Graph* g = new Graph(OpRegistry::Global());
  - auto var = Var(g, n);
  - auto accum = Var(g, n);
  - auto zero = Zeros(g, n);
  - test::graph::Assign(g, var, zero);
  - test::graph::Assign(g, accum, zero);
  - *init_g = g;
  - }
  - {
  - Graph* g = new Graph(OpRegistry::Global());
  - auto var = Var(g, n);
  - auto accum = Var(g, n);
  - auto lr = Scalar(g, 0.01);
  - auto grad = Random(g, n);
  - auto mom = Scalar(g, 0.01);
  - test::graph::Multi(g, "ApplyKerasMomentum", {var, accum, lr, grad, mom});
  - *train_g = g;
  - }
  -}
  -
  -static void BM_KerasMomentum(int iters, int params) {
  - const int64 tot = static_cast<int64>(iters) * params;
  - testing::ItemsProcessed(tot);
  - testing::BytesProcessed(tot * sizeof(float));
  - Graph* init;
  - Graph* train;
  - KerasMomentum(params, &init, &train);
  - test::Benchmark("cpu", train, GetOptions(), init).Run(iters);
  -}
  -BENCHMARK(BM_KerasMomentum)->Arg(128 << 10)->Arg(256 << 10);
  -
  static void Adam(int32 n, Graph** init_g, Graph** train_g) {
  TensorShape shape({n});
  {
  