Remove unused reference

Author: Andrew Hall

eng/Directory.Packages.props

@@ -145,7 +145,6 @@
     <PackageVersion Include="NuGet.ProjectModel" Version="6.8.0-rc.112" />
     <PackageVersion Include="Microsoft.TestPlatform.TranslationLayer" Version="$(MicrosoftNETTestSdkVersion)" />
     <PackageVersion Include="Microsoft.TestPlatform.ObjectModel" Version="$(MicrosoftNETTestSdkVersion)" />
-    <PackageVersion Include="Microsoft.AspNetCore.Razor.ExternalAccess.RoslynWorkspace" Version="9.0.0-preview.25064.4" />
 
     <!--
       Analyzers

src/LanguageServer/Microsoft.CodeAnalysis.LanguageServer/Microsoft.CodeAnalysis.LanguageServer.csproj

@@ -132,7 +132,6 @@
     <PackageReference Include="Microsoft.TestPlatform.TranslationLayer" />
     <PackageReference Include="Microsoft.TestPlatform.ObjectModel" />
     <PackageReference Include="Microsoft.VisualStudio.Composition" />
-    <PackageReference Include="Microsoft.AspNetCore.Razor.ExternalAccess.RoslynWorkspace" />
     <PackageReference Include="NuGet.ProjectModel" />
     <PackageReference Include="System.CommandLine" />