dont include marko-widget example, in case user is not using them

lib/cli/generators/MARKO/template/stories/components/hello/index.js

@@ -1,13 +0,0 @@
-module.exports = require('marko-widgets').defineComponent({
-  template: require('./template.marko'),
-
-  getTemplateData(state, input) {
-    return {
-      name: input.name,
-    };
-  },
-
-  handleClick() {
-    this.el.style.backgroundColor = 'yellow';
-  },
-});

lib/cli/generators/MARKO/template/stories/components/hello/template.marko

@@ -1,4 +0,0 @@
-<div w-bind
-  w-on-click="handleClick">
-  Hello ${data.name}!
-</div> 

lib/cli/generators/MARKO/template/stories/index.stories.js

@@ -1,16 +1,4 @@
 import { storiesOf } from '@storybook/marko';
-
-import { withKnobs, text } from '@storybook/addon-knobs';
 import Welcome from './components/welcome/index.marko';
-import MarkoWidgetHello from './components/hello/index.marko';
 
 storiesOf('Welcome', module).add('welcome', () => Welcome.renderSync({}));
-
-storiesOf('Hello (Marko Widget)', module)
-  .addDecorator(withKnobs)
-  .add('Simple', () => {
-    const name = text('Name', 'John Doe');
-    return MarkoWidgetHello.renderSync({
-      name,
-    });
-  });