Remove useless THREE.ImageUtils.crossOrigin line (aframevr#832)

Author: vincentfretin

src/components/Main.js

@@ -11,8 +11,6 @@ import CameraToolbar from './viewport/CameraToolbar';
 import TransformToolbar from './viewport/TransformToolbar';
 import ViewportHUD from './viewport/ViewportHUD';
 
-THREE.ImageUtils.crossOrigin = '';
-
 export default class Main extends React.Component {
   constructor(props) {
     super(props);