Removed return value for setRate method as it is not needed because that value is now stored in totalRate property

Author: pavle-goloskokovic

v3/src/sound/BaseSound.js

@@ -277,7 +277,6 @@ var BaseSound = new Class({
         var totalDetune = Math.max(-1200, Math.min(this.currentConfig.detune + this.manager.detune, 1200));
         var detuneRate = Math.pow(cent, totalDetune);
         this.totalRate = this.currentConfig.rate * this.manager.rate * detuneRate;
-        return this.totalRate;
     }
 });
 module.exports = BaseSound;