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

pkg/compiler/lib/src/js_backend/runtime_types.dart

Index: pkg/compiler/lib/src/js_backend/runtime_types.dart
diff --git a/pkg/compiler/lib/src/js_backend/runtime_types.dart b/pkg/compiler/lib/src/js_backend/runtime_types.dart
index 3d5259b8eae779c8e49f9882620b62c1b613f499..349905aeaad67b8ec99d4e83f90d705aac0f3381 100644
--- a/pkg/compiler/lib/src/js_backend/runtime_types.dart
+++ b/pkg/compiler/lib/src/js_backend/runtime_types.dart
@@ -673,21 +673,6 @@ class TypeRepresentationGenerator extends DartTypeVisitor {
     return new jsAst.ArrayInitializer(elements);
   }
 
-  /// Returns the JavaScript template to determine at runtime if a type object
-  /// is a function type.
-  jsAst.Template get templateForIsFunctionType {
-    return jsAst.js.expressionTemplateFor("'${namer.functionTypeTag}' in #");
-  }
-
-  /// Returns the JavaScript template that creates at runtime a new function
-  /// type object.
-  jsAst.Template get templateForCreateFunctionType {
-    // The value of the functionTypeTag can be anything. We use "dynaFunc" for
-    // easier debugging.
-    return jsAst.js.expressionTemplateFor(
-        '{ ${namer.functionTypeTag}: "dynafunc" }');
-  }
-
   visitFunctionType(FunctionType type, _) {
     List<jsAst.Property> properties = <jsAst.Property>[];