allow print/bed temp to fall back to first layer settings if they are omitted

src/kiri/init.js

@@ -46,7 +46,6 @@
         platform = API.platform,
         selection = API.selection,
         proto = location.protocol,
-        root = "grid.space",
         ver = Date.now().toString(36);
 
     let currentDevice = null,
@@ -1403,8 +1402,6 @@
     function init_one() {
         API.event.emit('init.one');
 
-        $('gsbox').src = `${proto}//${root}/kiri/gsbox.png?ver=${ver}`;
-
         // ensure we have settings from last session
         API.conf.restore();