Avoid deprecated forHostWithLedgerIdDiscovery in quickstart-java

fixes #9319

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docs/source/app-dev/bindings-java/quickstart/template-root/src/main/java/com/daml/quickstart/iou/IouMain.java

@@ -40,8 +40,7 @@ public static void main(String[] args) {
     int restport = Integer.valueOf(args[3]);
 
     // Create a client object to access services on the ledger.
-    DamlLedgerClient client =
-        DamlLedgerClient.forHostWithLedgerIdDiscovery(ledgerhost, ledgerport, Optional.empty());
+    DamlLedgerClient client = DamlLedgerClient.newBuilder(ledgerhost, ledgerport).build();
 
     // Connects to the ledger and runs initial validation.
     client.connect();