diff --git a/federatedscope/trafficflow/model/FedDGCN.py b/federatedscope/trafficflow/model/FedDGCN.py
index cc78239..697e831 100644
--- a/federatedscope/trafficflow/model/FedDGCN.py
+++ b/federatedscope/trafficflow/model/FedDGCN.py
@@ -99,18 +99,3 @@ class FedDGCN(nn.Module):
         output2 = self.end_conv3(output2)
 
         return output1 + output2
-
-
-# Instantiate your model class with config and data
-def ModelBuilder(model_config, local_data):
-    model = FedDGCN(model_config)
-    return model
-
-
-def call_ddgcrn(model_config, local_data):
-    if model_config.type == "DDGCRN":
-        model = ModelBuilder(model_config, local_data)
-        return model
-
-
-register_model("DDGCRN", call_ddgcrn)