Index: src/Common/DelftTools.Utils/WeakDictionary.cs
===================================================================
diff -u -r8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9 -r18f9b18cab9da0c768badb3084415e993a5414ee
--- src/Common/DelftTools.Utils/WeakDictionary.cs	(.../WeakDictionary.cs)	(revision 8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9)
+++ src/Common/DelftTools.Utils/WeakDictionary.cs	(.../WeakDictionary.cs)	(revision 18f9b18cab9da0c768badb3084415e993a5414ee)
@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 
 namespace DelftTools.Utils