Clean up many generated constructors

pkg/analysis_server/lib/src/services/refactoring/rename_import.dart

 // Copyright (c) 2014, 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.
 
 library services.src.refactoring.rename_import;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol_server.dart';
 import 'package:analysis_server/src/services/correction/source_range.dart';
@@ skipping 83 matching lines @@
   }
 
   /**
    * If the given [reference] is before an interpolated [SimpleIdentifier] in
    * an [InterpolationExpression] without surrounding curly brackets, return it.
    * Otherwise return `null`.
    */
   SimpleIdentifier _getInterpolationIdentifier(SourceReference reference) {
     Source source = reference.element.source;
     CompilationUnit unit = context.parseCompilationUnit(source);
-    NodeLocator nodeLocator = new NodeLocator.con1(reference.range.offset);
+    NodeLocator nodeLocator = new NodeLocator(reference.range.offset);
     AstNode node = nodeLocator.searchWithin(unit);
     if (node is SimpleIdentifier) {
       AstNode parent = node.parent;
       if (parent is InterpolationExpression && parent.rightBracket == null) {
         return node;
       }
     }
     return null;
   }
 }