build(storybook): remove import for uui-icon-registry-essential

Author: iOvergaard

.storybook/preview.ts

@@ -6,8 +6,6 @@ import '../packages/uui-css/dist/uui-css.css';
 import customElements from '../custom-elements.json';
 import { html } from 'lit';
 
-import '@umbraco-ui/uui-icon-registry-essential/lib';
-
 const preview: Preview = {
   parameters: {
     controls: {