dart2js OldEmitter: Remove processing of old metadata encoding.

pkg/compiler/lib/src/js_emitter/old_emitter/reflection_data_parser.dart

 // Copyright (c) 2013, 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.
 
 part of dart2js.js_emitter;
 
 // TODO(ahe): Share these with js_helper.dart.
 const FUNCTION_INDEX = 0;
 const NAME_INDEX = 1;
 const CALL_NAME_INDEX = 2;
@@ skipping 50 matching lines @@
       if (!hasOwnProperty.call(descriptor, property)) continue;
       var firstChar = property.substring(0, 1);
       if (property === "static") {
         processStatics(#embeddedStatics[cls] = descriptor[property], 
                        processedClasses);
       } else if (firstChar === "+") {
         mangledNames[previousProperty] = property.substring(1);
         var flag = descriptor[property];
         if (flag > 0)
           descriptor[previousProperty].$reflectableField = flag;
-      } else if (firstChar === "@" && property !== "@") {
-        newDesc[property.substring(1)][$metadataField] = descriptor[property];
       } else if (firstChar === "*") {
         newDesc[previousProperty].$defaultValuesField = descriptor[property];
         var optionalMethods = newDesc.$methodsWithOptionalArgumentsField;
         if (!optionalMethods) {
           newDesc.$methodsWithOptionalArgumentsField = optionalMethods={}
         }
         optionalMethods[property] = previousProperty;
       } else {
         var elem = descriptor[property];
         if (property !== "${namer.classDescriptorProperty}" &&
@@ skipping 60 matching lines @@
         var element = descriptor[property];
         var firstChar = property.substring(0, 1);
         var previousProperty;
         if (firstChar === "+") {
           mangledGlobalNames[previousProperty] = property.substring(1);
           var flag = descriptor[property];
           if (flag > 0)
             descriptor[previousProperty].$reflectableField = flag;
           if (element && element.length)
             #typeInformation[previousProperty] = element;
-        } else if (firstChar === "@") {
-          property = property.substring(1);
-          ${namer.currentIsolate}[property][$metadataField] = element;
         } else if (firstChar === "*") {
           globalObject[previousProperty].$defaultValuesField = element;
           var optionalMethods = descriptor.$methodsWithOptionalArgumentsField;
           if (!optionalMethods) {
             descriptor.$methodsWithOptionalArgumentsField = optionalMethods = {}
           }
           optionalMethods[property] = previousProperty;
         } else if (typeof element === "function") {
           globalObject[previousProperty = property] = element;
           functions.push(property);
@@ skipping 407 matching lines @@
 (function() {
   var result = $array[$index];
   if ($check) {
     throw new Error(
         name + ": expected value of type \'$type\' at index " + ($index) +
         " but got " + (typeof result));
   }
   return result;
 })()''';
 }