Running SilverStripe 3.1.1.

I am trying to remove the CSS requirement for PhotoGalleryHolder pages so then I don't have extra CSS files downloading that I don't even use in my overridden templates.

This is what I am currently using, but doesn't seem to work:

mysite/code/PhotoGalleryHolder.php:

class PhotoGalleryHolderController_Extension extends Extension {
	public function init() {
		Requirements::block("basic-galleries/css/gallery.css");
	}
}

mysite/_config.php:

PhotoGalleryHolder_Controller::add_extension('PhotoGalleryHolderController_Extension');

you have to use onAfterInit function

class PhotoGalleryHolderController_Extension extends Extension { 

   public function onAfterInit () { 
      Requirements::clear("basic-galleries/css/gallery.css"); 
   } 
}