Revert "dart2js: add compiler builtins to the core-runtime."

pkg/compiler/lib/src/enqueue.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.
 
 part of dart2js;
 
 typedef ItemCompilationContext ItemCompilationContextCreator();
 
 class EnqueueTask extends CompilerTask {
   final ResolutionEnqueuer resolution;
@@ skipping 765 matching lines @@
   }
 
   void registerJsCall(Send node, ResolverVisitor resolver) {
     nativeEnqueuer.registerJsCall(node, resolver);
   }
 
   void registerJsEmbeddedGlobalCall(Send node, ResolverVisitor resolver) {
     nativeEnqueuer.registerJsEmbeddedGlobalCall(node, resolver);
   }
 
-  void registerJsBuiltinCall(Send node, ResolverVisitor resolver) {
-    nativeEnqueuer.registerJsBuiltinCall(node, resolver);
-  }
-
   void _logSpecificSummary(log(message)) {
     log('Resolved ${resolvedElements.length} elements.');
   }
 
   void forgetElement(Element element) {
     super.forgetElement(element);
     resolvedElements.remove(element);
   }
 }
 
@@ skipping 109 matching lines @@
   void processWorkItem(void f(WorkItem work), WorkItem work) {
     f(work);
   }
 }
 
 void removeFromSet(Map<String, Set<Element>> map, Element element) {
   Set<Element> set = map[element.name];
   if (set == null) return;
   set.remove(element);
 }