chore(typings): remove traceur-runtime.d.ts

fixes #4297

Closes #4415

modules/angular2/src/router/route_registry.ts

@@ -43,7 +43,7 @@ var _resolveToNull = PromiseWrapper.resolve(null);
  */
 @Injectable()
 export class RouteRegistry {
-  private _rules: Map<any, RouteRecognizer> = new Map();
+  private _rules = new Map<any, RouteRecognizer>();
 
   /**
    * Given a component and a configuration object, add the route to this registry