code_style: remove unused code

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Commands/QueryStashChanges.cs

@@ -14,7 +14,7 @@ public partial class QueryStashChanges : Command
         [GeneratedRegex(@"^R[0-9]{0,4}\s+(.+)$")]
         private static partial Regex REG_RENAME_FORMAT();
 
-        public QueryStashChanges(string repo, string stash) 
+        public QueryStashChanges(string repo, string stash)
         {
             WorkingDirectory = repo;
             Context = repo;

src/Models/OpenAI.cs

@@ -107,15 +107,7 @@ public string Name
         public string Server
         {
             get => _server;
-            set
-            {
-                // migrate old server value
-                if (!string.IsNullOrEmpty(value) && value.EndsWith("/chat/completions", StringComparison.Ordinal))
-                {
-                    value = value.Substring(0, value.Length - "/chat/completions".Length);
-                }
-                SetProperty(ref _server, value);
-            }
+            set => SetProperty(ref _server, value);
         }
 
         public string ApiKey