Research mongo conn error

.github/workflows/ci-app.yml

@@ -99,8 +99,8 @@ jobs:
       working-directory: ./packages/app
       run: |
         yarn test
-      env:
-        MONGO_URI: mongodb://localhost:${{ job.services.mongodb.ports['27017'] }}/growi_test
+      # env:
+      #   MONGO_URI: mongodb://localhost:${{ job.services.mongodb.ports['27017'] }}/growi_test
 
     - name: Upload coverage report as artifact
       uses: actions/upload-artifact@v2

packages/app/test/integration/v5-global-setup.js

@@ -11,8 +11,6 @@ import mongoose from 'mongoose';
 
 import { initMongooseGlobalSettings, getMongoUri, mongoOptions } from '@growi/core';
 
-import { getInstance } from './setup-crowi';
-
 // check env
 if (process.env.NODE_ENV !== 'test') {
   throw new Error('\'process.env.NODE_ENV\' must be \'test\'');