[Pharo-project] Issue 3443 in pharo: Should remove Sophie Undo classes

[pharo]

Status: Accepted
Owner: stephane.ducasse
Labels: Milestone-1.2
New issue 3443 by stephane.ducasse: Should remove Sophie Undo classes
http://code.google.com/p/pharo/issues/detail?id=3443

Now that we have the new implementation for the undo we should remove the  
sophie classes.