fix: remove useMongoose composable

src/runtime/composables/useMongoose.ts

@@ -1,8 +0,0 @@
-import type { mongo } from 'mongoose'
-import { connection } from 'mongoose'
-
-export function useMongoose(): { db: mongo.Db } {
-  return {
-    db: connection?.db,
-  }
-}