Remove old razor

src/Microsoft.AspNetCore.Mvc.Razor/DependencyInjection/MvcRazorMvcCoreBuilderExtensions.cs

@@ -10,7 +10,6 @@
 using Microsoft.AspNetCore.Mvc.Razor.Internal;
 using Microsoft.AspNetCore.Mvc.Razor.TagHelpers;
 using Microsoft.AspNetCore.Mvc.Rendering;
-using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Razor.Evolution;
 using Microsoft.AspNetCore.Razor.Runtime.TagHelpers;
 using Microsoft.AspNetCore.Razor.TagHelpers;
@@ -64,11 +63,6 @@ public static IMvcCoreBuilder AddRazorViewEngine(
 
         private static void AddRazorViewEngineFeatureProviders(IMvcCoreBuilder builder)
         {
-            if (!builder.PartManager.FeatureProviders.OfType<TagHelperFeatureProvider>().Any())
-            {
-                builder.PartManager.FeatureProviders.Add(new TagHelperFeatureProvider());
-            }
-
             if (!builder.PartManager.FeatureProviders.OfType<MetadataReferenceFeatureProvider>().Any())
             {
                 builder.PartManager.FeatureProviders.Add(new MetadataReferenceFeatureProvider());
@@ -158,12 +152,6 @@ internal static void AddRazorViewEngineServices(IServiceCollection services)
 
             services.TryAddSingleton<IRazorViewEngine, RazorViewEngine>();
 
-            services.TryAddSingleton<ITagHelperTypeResolver, TagHelperTypeResolver>();
-            services.TryAddSingleton<ITagHelperDescriptorFactory>(s => new TagHelperDescriptorFactory(designTime: false));
-            services.TryAddSingleton<TagHelperDescriptorResolver>();
-            services.TryAddSingleton<ViewComponentTagHelperDescriptorResolver>();
-            services.TryAddSingleton<ITagHelperDescriptorResolver, CompositeTagHelperDescriptorResolver>();
-
             // Caches compilation artifacts across the lifetime of the application.
             services.TryAddSingleton<ICompilerCacheProvider, DefaultCompilerCacheProvider>();
 

src/Microsoft.AspNetCore.Mvc.Razor/Internal/TagHelpersAsServices.cs

@@ -5,7 +5,6 @@
 using System.Linq;
 using Microsoft.AspNetCore.Mvc.ApplicationParts;
 using Microsoft.AspNetCore.Mvc.Razor.TagHelpers;
-using Microsoft.AspNetCore.Razor.Runtime.TagHelpers;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 
@@ -34,7 +33,6 @@ public static void AddTagHelpersAsServices(ApplicationPartManager manager, IServ
             }
 
             services.Replace(ServiceDescriptor.Transient<ITagHelperActivator, ServiceBasedTagHelperActivator>());
-            services.Replace(ServiceDescriptor.Transient<ITagHelperTypeResolver, FeatureTagHelperTypeResolver>());
         }
     }
 }