Remove dependency on Microsoft.NETCore.App from the generated nuspec (#160)

src/Microsoft.AspNetCore.Mvc.Razor.ViewCompilation/Microsoft.AspNetCore.Mvc.Razor.ViewCompilation.csproj

@@ -22,6 +22,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.RazorPages" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.CommandLineUtils.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
+    <PackageReference Update="Microsoft.NETCore.App" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>