message: remove redundant check in LSTMUnitLayer
diff: @@ -31,7 +31,6 @@ void LSTMUnitLayer<Dtype>::Reshape(const vector<Blob<Dtype>*>& bottom,
  CHECK_EQ(num_instances, bottom[i]->shape(1));
  }
  hidden_dim_ = bottom[0]->shape(2);
  - CHECK_EQ(num_instances, bottom[1]->shape(1));
  CHECK_EQ(4 * hidden_dim_, bottom[1]->shape(2));
  top[0]->ReshapeLike(*bottom[0]);
  top[1]->ReshapeLike(*bottom[0]);
  