Update .env_sample

application/.env_sample

@@ -1,9 +1,8 @@
 API_KEY=your_api_key
 EMBEDDINGS_KEY=your_api_key
-CELERY_BROKER_URL=redis://localhost:6379/0
-CELERY_RESULT_BACKEND=redis://localhost:6379/1
-MONGO_URI=mongodb://localhost:27017/docsgpt
 API_URL=http://localhost:7091
+FLASK_APP=application/app.py
+FLASK_DEBUG=true
 
 #For OPENAI on Azure
 OPENAI_API_BASE=