--- a/nashorn/src/jdk/nashorn/internal/ir/BinaryNode.java	Wed Feb 27 15:49:05 2013 +0100
+++ b/nashorn/src/jdk/nashorn/internal/ir/BinaryNode.java	Wed Feb 27 16:25:15 2013 +0100
@@ -140,21 +140,11 @@
     }
 
     @Override
-    public void setAssignmentDest(final Node node) {
-        setLHS(node);
-    }
-
-    @Override
     public Node getAssignmentSource() {
         return rhs();
     }
 
     @Override
-    public void setAssignmentSource(final Node source) {
-        setRHS(source);
-    }
-
-    @Override
     public boolean equals(final Object other) {
         if (!super.equals(other)) {
             return false;