don't refresh old nodes when refresh from toolbar of Azure Explorer.

Author: wangmingliang-ms

PluginsAndFeatures/azure-toolkit-for-intellij/src/main/java/com/microsoft/intellij/ui/ServerExplorerToolWindowFactory.java

@@ -477,7 +477,7 @@ public RefreshAllAction(AzureModule azureModule) {
 
         @Override
         public void actionPerformed(AnActionEvent event) {
-            azureModule.load(true);
+//            azureModule.load(true);
             AzureExplorer.refreshAll();
         }