Clean up usings

drewnoakes · drewnoakes · commit 2904e983ff75 · 2025-06-14T23:41:10.000+10:00
diff --git a/src/NetMQ/ThreadSafeSocket.cs b/src/NetMQ/ThreadSafeSocket.cs
@@ -1,10 +1,6 @@
 using System;
-using System.Diagnostics;
 using System.Threading;
 using NetMQ.Core;
-#if NET40
-using NetMQ.Core.Utils;
-#endif
 
 namespace NetMQ
 {
