web: remove unused code

web/app/download/page.tsx

@@ -1,8 +1,5 @@
-import { Octokit } from '@octokit/rest'
 import { redirect } from 'next/navigation'
 
-const octokit = new Octokit()
-
 export default async function Download() {
   const res = await fetch('https://api.github.com/repos/jmorganca/ollama/releases', { next: { revalidate: 60 } })
   const data = await res.json()