Update nextjs.

pages/_middleware.ts

@@ -1,10 +0,0 @@
-import type { NextRequest, NextFetchEvent } from 'next/server'
-import { NextResponse as Response } from 'next/server'
-
-export default function middleware(req: NextRequest, ev: NextFetchEvent) {
-  if (req.nextUrl.pathname === '/') {
-    const url = req.nextUrl.clone()
-    url.pathname = '/develop'
-    return Response.redirect(url)
-  }
-}