Clean up

Author: JamesNK

src/Servers/Kestrel/Transport.Quic/src/Internal/QuicLog.cs

@@ -1,7 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System.Net.Http;
 using System.Net.Security;
 using Microsoft.AspNetCore.Connections;
 using Microsoft.Extensions.Logging;