fix import

onnxruntime/python/tools/transformers/optimizer.py

@@ -40,9 +40,9 @@
 from onnx_model_tnlr import TnlrOnnxModel
 from onnx_model_unet import UnetOnnxModel
 from onnx_model_vae import VaeOnnxModel
+from onnx_utils import extract_raw_data_from_model, has_external_data
 
 import onnxruntime
-from onnxruntime.transformers.onnx_utils import extract_raw_data_from_model, has_external_data
 
 logger = logging.getLogger(__name__)