Don't save moe_group (#8570)

Author: DesmonDay

paddlenlp/transformers/configuration_utils.py

@@ -903,6 +903,8 @@ def to_dict(self) -> Dict[str, Any]:
             output["model_type"] = self.__class__.model_type
         if "_auto_class" in output:
             del output["_auto_class"]
+        if "moe_group" in output:
+            del output["moe_group"]
 
         output["quantization_config"] = self.quantization_config.to_dict()