remove app.keys getter/setter

closes #203

lib/application.js

@@ -105,39 +105,6 @@ app.callback = function(){
   }
 };
 
-/**
- * Set signed cookie keys.
- *
- * These are passed to [KeyGrip](https://github.com/jed/keygrip),
- * however you may also pass your own `KeyGrip` instance. For
- * example the following are acceptable:
- *
- *   app.keys = ['im a newer secret', 'i like turtle'];
- *   app.keys = new KeyGrip(['im a newer secret', 'i like turtle'], 'sha256');
- *
- * @param {Array|KeyGrip} keys
- * @api public
- */
-
-app.__defineSetter__('keys', function(keys){
-  var ok = keys && (Array.isArray(keys)
-    || (keys.constructor && keys.constructor.name === 'Keygrip'));
-  debug('keys %j', keys);
-  if (!ok) throw new TypeError('app.keys must be an array or Keygrip');
-  this._keys = keys;
-});
-
-/**
- * Get `Keygrip` instance.
- *
- * @return {Keygrip}
- * @api public
- */
-
-app.__defineGetter__('keys', function(){
-  return this._keys;
-});
-
 /**
  * Initialize a new context.
  *