remove retain release for actions.

Author: nantas

assets/scripts/UI/ButtonScaler.js

@@ -15,8 +15,6 @@ cc.Class({
         self.button = self.getComponent(cc.Button);
         self.scaleDownAction = cc.scaleTo(self.transDuration, self.pressedScale);
         self.scaleUpAction = cc.scaleTo(self.transDuration, self.initScale);
-        self.scaleDownAction.retain();
-        self.scaleUpAction.retain();
         function onTouchDown (event) {
             this.stopAllActions();
             audioMng.playButton();
@@ -29,10 +27,5 @@ cc.Class({
         this.node.on('touchstart', onTouchDown, this.node);
         this.node.on('touchend', onTouchUp, this.node);
         this.node.on('touchcancel', onTouchUp, this.node);
-    },
-
-    onDestroy: function () {
-        this.scaleUpAction.release();
-        this.scaleDownAction.release();
     }
 });