docs(plugins): remove redundant text for unocss

docs/latest/examples/using-unocss.md

@@ -3,28 +3,8 @@ description: |
   One can use UnoCSS, an instant on-demand atomic CSS engine
 ---
 
-When you initialize a project with `deno run -A -r https://fresh.deno.dev`,
-you'll end up with a `main.ts` like the following:
-
-```ts
-/// <reference no-default-lib="true" />
-/// <reference lib="dom" />
-/// <reference lib="dom.iterable" />
-/// <reference lib="dom.asynciterable" />
-/// <reference lib="deno.ns" />
-
-import { start } from "$fresh/server.ts";
-import manifest from "./fresh.gen.ts";
-
-import unocssPlugin from "$fresh/plugins/unocss.ts";
-import unocssConfig from "./uno.config.ts";
-
-await start(manifest, { plugins: [unocssPlugin(unocssConfig)] });
-```
-
 The template generates a Twind v0 project by default. If you want to use UnoCSS
-you can follow this guide. First of all, change the import path to use the
-`unocss` plugin:
+you can update the `main.ts` as follows:
 
 ```ts
 /// <reference no-default-lib="true" />