message: [tf.data] Reverting portion of cl/322686110, changing back model input time to be zero (i.e. infinitely fast consumer).
diff: @@ -204,7 +204,7 @@ class ModelDatasetOp : public UnaryDatasetOpKernel {
  model_input_time = SelfInputTime();
  }
  model_->Optimize(dataset()->algorithm_, dataset()->cpu_budget_,
  - dataset()->ram_budget_, model_input_time);
  + dataset()->ram_budget_, /*model_input_time=*/0);
  // Exponentially increase the period of running the optimization
  // until a threshold is reached.
  if (optimization_period_ms != kOptimizationPeriodThresholdMs) {
  