update cucumber to 1.2.1 and remove hack

features/support/hooks.js

@@ -33,9 +33,4 @@ module.exports = function () {
             });
         });
     });
-
-    this.Around('@stress', (scenario, callback) => {
-        // TODO implement stress timeout? Around support is being dropped in cucumber-js anyway
-        callback();
-    });
 };