Revert changes in RunValveIsolationTraceView.

Author: yo1995

Shared/Samples/Run valve isolation trace/RunValveIsolationTraceView.Model.swift

@@ -24,7 +24,7 @@ extension RunValveIsolationTraceView {
         let map = Map(basemapStyle: .arcGISStreetsNight)
 
         /// The utility network for this sample.
-        private let utilityNetwork: UtilityNetwork
+        private let utilityNetwork = UtilityNetwork(url: .featureServiceURL)
 
         /// The service geodatabase used to create the feature layer.
         private let serviceGeodatabase = ServiceGeodatabase(url: .featureServiceURL)
@@ -94,7 +94,6 @@ extension RunValveIsolationTraceView {
         }()
 
         init() {
-            utilityNetwork = UtilityNetwork(serviceGeodatabase: serviceGeodatabase)
             map.addUtilityNetwork(utilityNetwork)
         }