기타 사용되지 않는 코드 제거

src/TableCloth/Extensions.cs

@@ -7,9 +7,5 @@ internal static class Extensions
     {
         public static HttpClient CreateTableClothHttpClient(this IHttpClientFactory httpClientFactory)
             => httpClientFactory!.CreateClient(nameof(TableCloth));
-
-        public static T AssignService<T>(this IServiceProvider serviceProvider, out T target)
-            where T : class
-            => target = serviceProvider.GetService(typeof(T)) as T;
     }
 }