refactor(tests): removed @IMPLEMENTS

modules/angular2/src/core/facade/lang.dart

@@ -23,11 +23,6 @@ class ABSTRACT {
   const ABSTRACT();
 }
 
-class IMPLEMENTS {
-  final interfaceClass;
-  const IMPLEMENTS(this.interfaceClass);
-}
-
 bool isPresent(obj) => obj != null;
 bool isBlank(obj) => obj == null;
 bool isString(obj) => obj is String;

modules/angular2/src/core/facade/lang.ts

@@ -71,13 +71,6 @@ export function ABSTRACT(): ClassDecorator {
   return (t) => t;
 }
 
-// Note: This is only a marker annotation needed for ts2dart.
-// This is written so that is can be used as a Traceur annotation
-// or a Typescript decorator.
-export function IMPLEMENTS(_): ClassDecorator {
-  return (t) => t;
-}
-
 export function isPresent(obj: any): boolean {
   return obj !== undefined && obj !== null;
 }