How to remove the alerts 'trackingBackend' and 'markersAreaEnabled' with AR.js?

On my AR.JS example https://github.com/ybinstock/aframe_ar (github) https://ybinstock.github.io/aframe_ar (live site), I'm getting these two boxes seen in the attached image.

Here's my aframe scene

<a-scene embedded arjs>

  <a-assets>
    <a-asset-item id="drone" src="busterDrone/busterDrone.gltf"></a-asset-item>
    <a-asset-item id="helmet" src="damagedHelmet/damagedHelmet.gltf"></a-asset-item>
    <a-asset-item id="skull" src="skull_downloadable/scene.gltf"></a-asset-item>
  </a-assets>


    <a-marker-camera preset='hiro'>

      <a-entity gltf-model-next="#drone"></a-entity>



    </a-marker-camera>


</a-scene>