Subzero: Class definition cleanup.

src/IceTimerTree.h

Index: src/IceTimerTree.h
diff --git a/src/IceTimerTree.h b/src/IceTimerTree.h
index 88685bf694e045aaffb575fc7da6a40a67fc6848..bc38245f06cc2cc4a33625ba9c03ceae07d8cd86 100644
--- a/src/IceTimerTree.h
+++ b/src/IceTimerTree.h
@@ -31,6 +31,9 @@ typedef std::vector<TimerTreeNode>::size_type TTindex;
 // the TimerTreeNode::Nodes array, and the parent is always at a lower
 // index.
 class TimerTreeNode {
+  // TimerTreeNode(const TimerTreeNode &) = delete;
+  TimerTreeNode &operator=(const TimerTreeNode &) = delete;
+
 public:
   TimerTreeNode() : Parent(0), Interior(0), Time(0), UpdateCount(0) {}
   std::vector<TTindex> Children; // indexed by TimerIdT