remove open api key

src/app.py

@@ -8,8 +8,6 @@ from langchain_openai import ChatOpenAI
 from langchain.prompts import ChatPromptTemplate
 import os
 
-os.environ["OPENAI_API_KEY"] = "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"
-
 # Connect DB
 client = pymongo.MongoClient(
     "mongodb+srv://rag:p9vojYc9fafYwxE9@rag.xswi7nq.mongodb.net/?retryWrites=true&w=majority&appName=RAG"