remove clientExtensionResults from json

Author: PhilippC

src/Kp2aPasskey.Core/AuthenticatorResponses.cs

@@ -424,7 +424,7 @@ public string ToJson()
       json.Put("type", "public-key");
       json.Put("authenticatorAttachment", authenticatorAttachment);
       json.Put("response", response);
-      json.Put("clientExtensionResults", new JSONObject()); // TODO credProps
+
 
       var jsonString = json.ToString();
       Log.Debug("FidoPublicKeyCredential", "=== COMPLETE CREDENTIAL JSON ===");