[warningsAsErrors] Getting settings online (#6053)

* getting everything to compile

* fixing json

src/core/Microsoft.PowerToys.Settings.UI.Lib/ConfigDefaults.cs

@@ -2,10 +2,6 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System;
-using System.Collections.Generic;
-using System.Text;
-
 namespace Microsoft.PowerToys.Settings.UI.Lib
 {
     public static class ConfigDefaults