Restore iD-sprite preset icons

data/maki_sprite.js

@@ -6,8 +6,6 @@ var maki = require('maki/www/maki-sprite.json');
 // Generate CSS
 var template = '.feature-{name}{background-position:-{x}px -{y}px;}\n';
 var css = "/* This file is generated by make. Do NOT edit manually. */\n\n";
-css += ".preset-icon{background-image:url(img/maki-sprite.png);background-repeat:no-repeat;width:24px;height:24px;}\n";
-
 var images = {};
 
 _.forEach(maki, function(dimensions, name) {