Remove unused method.

lib/compiler/implementation/tree/unparser.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Returns null if no need to rename a node.
 typedef String Renamer(Node node);
 
 class Unparser implements Visitor {
   Renamer rename;
   StringBuffer sb;
@@ skipping 246 matching lines @@
       }
     }
     if (!node.isPrefix && !node.isIndex) {
       visit(node.selector);
     }
     if (spacesNeeded) {
       sb.add(' ');
     }
   }
 
-  unparseSend(Send node) {
-    unparseSendPart(node);
-    visit(node.argumentsNode);
-  }
-
   visitSend(Send node) {
     unparseSendPart(node);
     visit(node.argumentsNode);
   }
 
   /**
    * Special case for assignments like "list[0] = 1".
    */
   unparseIndexedSet(SendSet node) {
     if (node.isPrefix) {
@@ skipping 224 matching lines @@
       sb.add(' ');
     }
     visit(node.name);
     if (node.typeParameters !== null) {
       visit(node.typeParameters);
     }
     visit(node.formals);
     add(node.endToken.value);
   }
 }