small code refactoring

Pilz.Updating.Administration/ProxyConfiguration.cs

@@ -1,18 +1,12 @@
 using Newtonsoft.Json;
 using Pilz.Cryptography;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
-namespace Pilz.Updating.Administration
+namespace Pilz.Updating.Administration;
+
+public class ProxyConfiguration
 {
-    public class ProxyConfiguration
-    {
-        public bool UseProxyAuth { get; set; }
-        public string Username { get; set; }
-        [JsonProperty("PasswordV3")]
-        public SecureString Password { get; set; }
-    }
+    public bool UseProxyAuth { get; set; }
+    public string Username { get; set; }
+    [JsonProperty("PasswordV3")]
+    public SecureString Password { get; set; }
 }