microservice demo: removed "code" from updates

samples/MicroserviceDemo/modules/product/src/ProductManagement.Application.Contracts/MyCompanyName/ProductManagement/UpdateProductDto.cs

@@ -2,8 +2,6 @@
 {
     public class UpdateProductDto
     {
-        public string Code { get; set; }
-
         public string Name { get; set; }
 
         public float Price { get; set; }

samples/MicroserviceDemo/modules/product/src/ProductManagement.Web/Pages/ProductManagement/Products/Edit.cshtml.cs

@@ -38,7 +38,6 @@ namespace ProductManagement.Pages.ProductManagement.Products
         {
             await _productAppService.UpdateAsync(Product.Id, new UpdateProductDto()
             {
-                Code = Product.Code,
                 Name = Product.Name,
                 Price = Product.Price,
                 StockCount = Product.StockCount
@@ -51,10 +50,6 @@ namespace ProductManagement.Pages.ProductManagement.Products
             [Required]
             public Guid Id { get; set; }
 
-            [Required]
-            [StringLength(ProductConsts.MaxCodeLength)]
-            public string Code { get; set; }
-
             [Required]
             [StringLength(ProductConsts.MaxNameLength)]
             public string Name { get; set; }