refactor: 移除不使用的命名空间

Author: ArgoZhang

src/BootstrapBlazor.Server/Program.cs

@@ -4,7 +4,6 @@
 // Maintainer: Argo Zhang([email protected]) Website: https://www.blazor.zone
 
 using BootstrapBlazor.Server.Components;
-using BootstrapBlazor.Server.Components.Layout;
 using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.Extensions.Options;
 using System.Text;