fix: error cause of network prefab list

Author: rYuuk

Samples~/AvatarControl/Scenes/NetworkPrefabs-45480.asset

@@ -13,9 +13,4 @@ MonoBehaviour:
   m_Name: NetworkPrefabs-45480
   m_EditorClassIdentifier: 
   IsDefault: 0
-  List:
-  - Override: 0
-    Prefab: {fileID: 918681697409016310, guid: 39bfa80ee51e22c4b9b3847156eb4def, type: 3}
-    SourcePrefabToOverride: {fileID: 0}
-    SourceHashToOverride: 0
-    OverridingTargetPrefab: {fileID: 0}
+  List: []

Samples~/FightingGame/Scenes/NetworkPrefabs-36844.asset

@@ -14,11 +14,6 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   IsDefault: 0
   List:
-  - Override: 0
-    Prefab: {fileID: 6680477069050545067, guid: 5144ed0b1fe3f4c46ad32714cb82a712, type: 3}
-    SourcePrefabToOverride: {fileID: 0}
-    SourceHashToOverride: 0
-    OverridingTargetPrefab: {fileID: 0}
   - Override: 0
     Prefab: {fileID: 1475195968598476399, guid: e5eeaeebe6f150e418198558218d75fb, type: 3}
     SourcePrefabToOverride: {fileID: 0}