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

pkg/compiler/lib/src/native/enqueue.dart

Index: pkg/compiler/lib/src/native/enqueue.dart
diff --git a/pkg/compiler/lib/src/native/enqueue.dart b/pkg/compiler/lib/src/native/enqueue.dart
index 7d698b65f489d168b40cfe942e79d3d48d5b20aa..a7c7af93565c8b2a6a2d561e566748be15049e51 100644
--- a/pkg/compiler/lib/src/native/enqueue.dart
+++ b/pkg/compiler/lib/src/native/enqueue.dart
@@ -54,18 +54,6 @@ class NativeEnqueuer {
   // TODO(sra): The entry from codegen will not have a resolver.
   void registerJsEmbeddedGlobalCall(Send node, ResolverVisitor resolver) {}
 
-  /**
-   * Handles JS-compiler builtin calls, which can be an instantiation point for
-   * types.
-   *
-   * For example, the following code instantiates and returns a String class
-   *
-   *     JS_BUILTIN('String', 'int2string', 0)
-   *
-   */
-  // TODO(sra): The entry from codegen will not have a resolver.
-  void registerJsBuiltinCall(Send node, ResolverVisitor resolver) {}
-
   /// Emits a summary information using the [log] function.
   void logSummary(log(message)) {}
 
@@ -504,14 +492,6 @@ abstract class NativeEnqueuerBase implements NativeEnqueuer {
     flushQueue();
   }
 
-  void registerJsBuiltinCall(Send node, ResolverVisitor resolver) {
-    NativeBehavior behavior =
-        NativeBehavior.ofJsBuiltinCall(node, compiler, resolver);
-    processNativeBehavior(behavior, node);
-    nativeBehaviors[node] = behavior;
-    flushQueue();
-  }
-
   NativeBehavior getNativeBehaviorOf(Send node) => nativeBehaviors[node];
 
   processNativeBehavior(NativeBehavior behavior, cause) {