Cleanup

Author: Kai Ruhnau

src/Microsoft.AspNet.Server.Kestrel/Networking/UvStreamHandle.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using System.Diagnostics;
 using System.Runtime.InteropServices;
 
 namespace Microsoft.AspNet.Server.Kestrel.Networking

src/Microsoft.AspNet.Server.Kestrel/Networking/UvTcpHandle.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using System;
 using System.Net;
 
 namespace Microsoft.AspNet.Server.Kestrel.Networking

src/Microsoft.AspNet.Server.Kestrel/Networking/UvWriteRequest.cs

@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Runtime.InteropServices;
 
 namespace Microsoft.AspNet.Server.Kestrel.Networking