Removed unnecessary docs

Author: pavle-goloskokovic

src/sound/BaseSoundManager.js

@@ -216,11 +216,6 @@ var BaseSoundManager = new Class({
     {
         var sound = this.add(key, config);
 
-        /**
-         * Local reference to 'spritemap' object form json file generated by audiosprite tool.
-         *
-         * @property {object} spritemap
-         */
         sound.spritemap = this.game.cache.json.get(key).spritemap;
 
         for (var markerName in sound.spritemap)