Remove embedded plunk from the home page

[boghyon]

Problem

Currently, visitors of the https://openui5.org see the following on the front page:

As if displaying a warning in the preview panel is not bad enough, clicking on any of the buttons (Back, Proceed, Dismiss) doesn't actually do anything.

Plunker was very popular in the AngularJS days and it's still useful for e.g. sharing small demos or code snippets on various Q&A platforms. But it's unfortunately poorly maintained, broken, and ad-supported which is, frankly speaking, quite embarrassing compared to how other frameworks showcase their key concepts on their homepage (See https://svelte.dev).

Solution?

Simply removing the plunk from the homepage would reduce the impression that OpenUI5 itself is not well-maintained.

[pavelkornev]

Hello Boghyon,

thanks for creating this issue. The code snippet is planned to be replaced with CodeSandbox soon.

BR,
Pavel

[pavelkornev]

FYI: it's now replaced with CodeSandbox...