chore: fix defineNitroPlugin patch (#9)

src/runtime/server/plugins/mongoose.db.ts

@@ -1,15 +1,5 @@
-/**
- * Due to an upstream bug in Nuxt 3 we need to stub the plugin here, track:https://github.com/nuxt/nuxt/issues/18556
- * */
-import type { NitroApp } from 'nitropack'
 import { defineMongooseConnection } from '../services/mongoose'
 
-type NitroAppPlugin = (nitro: NitroApp) => void
-
-function defineNitroPlugin(def: NitroAppPlugin): NitroAppPlugin {
-  return def
-}
-
 export default defineNitroPlugin(() => {
   defineMongooseConnection()
 })