Revert "chore: fix defineNitroPlugin patch (#9)"

This reverts commit 470f272183.

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

@@ -1,5 +1,15 @@
+/**
+ * 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()
 })