message: [tracing] Traceme construction already check TraceMeRecorder::Active(level).
  MightTrace are checking different event_collector, and annotation setting etc, which is not relevant. Remove MightTrace make thing more clean.
  I expect no performance problem when tracing is off, when tracing is on, this definitely faster.
diff: @@ -1816,8 +1816,7 @@ void ExecutorState::Process(TaggedNode tagged_node, int64 scheduled_nsec) {
  if (completed) ScheduleFinish();
  };
  nodestats::SetOpStart(stats);
  - if (TF_PREDICT_FALSE(
  - MightTrace(item, event_collector_, trace_using_annotations_))) {
  + {
  profiler::TraceMe activity(
  [&] {
  return strings::StrCat(
  @@ -1827,8 +1826,6 @@ void ExecutorState::Process(TaggedNode tagged_node, int64 scheduled_nsec) {
  },
  profiler::GetTFTraceMeLevel(op_kernel->IsExpensive()));
  device->ComputeAsync(async, &state->ctx, done);
  - } else {
  - device->ComputeAsync(async, &state->ctx, done);
  }
  } else {
  // Synchronous computes.
  