[corlib] Remove now unneeded line

diff --git a/mcs/class/corlib/System.Threading/CancellationTokenSource.cs b/mcs/class/corlib/System.Threading/CancellationTokenSource.cs
index 67374409a631cc5f73a3e6530ed39a4dfca8e334..f8987f279e83d0d2551a8aaed5b3342ad75a86d8 100644 (file)
--- a/mcs/class/corlib/System.Threading/CancellationTokenSource.cs
+++ b/mcs/class/corlib/System.Threading/CancellationTokenSource.cs
@@ -273,7 +273,6 @@ namespace System.Threading
                                return;
                        foreach (var linked in registrations)
                                linked.Dispose ();
-                       registrations = null;
                }
                
                internal CancellationTokenRegistration Register (Action callback, bool useSynchronizationContext)