Apply suggestion from @radical

Author: radical

src/Mvc/test/Mvc.FunctionalTests/RazorRuntimeCompilationHostingStartupTest.cs

@@ -5,7 +5,6 @@
 using System.Reflection;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.InternalTesting;
-
 using Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation;
 using Microsoft.AspNetCore.Mvc.Testing;
 using Microsoft.AspNetCore.TestHost;