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Drop Blazor NRT content (#23635)

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@ -96,20 +96,6 @@ The Blazor Server template creates the initial files and directory structure for
* <xref:Microsoft.AspNetCore.Builder.ComponentEndpointRouteBuilderExtensions.MapBlazorHub%2A> is called to set up an endpoint for the real-time connection with the browser. The connection is created with [SignalR](xref:signalr/introduction), which is a framework for adding real-time web functionality to apps.
* [`MapFallbackToPage("/_Host")`](xref:Microsoft.AspNetCore.Builder.RazorPagesEndpointRouteBuilderExtensions.MapFallbackToPage%2A) is called to set up the root page of the app (`Pages/_Host.cshtml`) and enable navigation.
## Nullable reference types (NRTs) and .NET compiler null-state static analysis
Blazor project templates embrace the use of nullable reference types (NRTs) and the .NET compiler's null-state static analysis. These features were released with C# 8 and are enabled by default for apps generated using ASP.NET Core 6.0 (C# 10) or later.
The .NET compiler's null-state static analysis warnings can either be ignored or serve as a guide for updating a documentation example or sample app locally. Null-state static analysis can be disabled by [setting `Nullable` to `disable`](/dotnet/csharp/language-reference/builtin-types/nullable-reference-types#setting-the-nullable-context) in the app's project file, which we only recommend for documentation examples and sample apps if the compiler warnings are distracting while learning about .NET. **_We don't recommended disabling null-state checking in production projects._**
For more information on NRTs, the MSBuild `Nullable` property, and updating apps (including `#pragma` guidance), see the following resources in the C# documentation:
* [Nullable reference types](/dotnet/csharp/nullable-references)
* [Nullable reference types (C# reference)](/dotnet/csharp/language-reference/builtin-types/nullable-reference-types)
* [Learn techniques to resolve nullable warnings](/dotnet/csharp/nullable-warnings)
* [Update a codebase with nullable reference types to improve null diagnostic warnings](/dotnet/csharp/nullable-migration-strategies)
* [Attributes for null-state static analysis](/dotnet/csharp/language-reference/attributes/nullable-analysis)
## Additional resources
* <xref:blazor/tooling>