fix src/ua/UABaseNode.ts:170:5 - error TS2393: Duplicate function

implementation.

src/ua/UABaseNode.ts

@@ -165,17 +165,7 @@ export class UABaseNode implements IToXML{
         const tmpNode= coerceNodeId(nodeId.toString());
         tmpNode.namespace=nsIdx;
         return tmpNode;
-    }
-
-    getModellingRule(){
-        let res:any = "";
-        this.references.forEach((ref)=>{
-            if(ref.referenceType == "HasModellingRule"){
-                res = ref.toNode.displayName;
-            }
-        })
-        return res;
-    }    
+    } 
 }