doc: 精简代码

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Samples/TextAreas.razor.cs

@@ -3,8 +3,6 @@
 // See the LICENSE file in the project root for more information.
 // Maintainer: Argo Zhang([email protected]) Website: https://www.blazor.zone
 
-using Microsoft.AspNetCore.Components.Web;
-
 namespace BootstrapBlazor.Server.Components.Samples;
 
 /// <summary>