Remove deprecated dart:utf library.

runtime/vm/bootstrap.cc

 // 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.
 
 #include "vm/bootstrap.h"
 
 #include "include/dart_api.h"
 
 #include "vm/bootstrap_natives.h"
 #include "vm/compiler.h"
@@ skipping 48 matching lines @@
                Bootstrap::math_source_paths_,
                Bootstrap::math_patch_paths_),
   INIT_LIBRARY(ObjectStore::kMirrors,
                mirrors,
                Bootstrap::mirrors_source_paths_,
                Bootstrap::mirrors_patch_paths_),
   INIT_LIBRARY(ObjectStore::kTypedData,
                typed_data,
                Bootstrap::typed_data_source_paths_,
                Bootstrap::typed_data_patch_paths_),
-  INIT_LIBRARY(ObjectStore::kUtf,
-               utf,
-               Bootstrap::utf_source_paths_,
-               NULL),
 
   { ObjectStore::kNone, NULL, NULL, NULL, NULL }
 };
 
 
 static RawString* GetLibrarySource(const Library& lib,
                                    const String& uri,
                                    bool patch) {
   // First check if this is a valid boot strap library and find it's index
   // in the 'bootstrap_libraries' table above.
@@ skipping 233 matching lines @@
   // Exit the Dart scope.
   Dart_ExitScope();
 
   // Restore the library tag handler for the isolate.
   isolate->set_library_tag_handler(saved_tag_handler);
 
   return error.raw();
 }
 
 }  // namespace dart