changed API access to secret

app.py

@@ -1,7 +1,6 @@
 import streamlit as st
 from openai import OpenAI
 import glob
-import os
 
 from langchain_community.vectorstores import Chroma
 from langchain_core.output_parsers import StrOutputParser
@@ -13,8 +12,8 @@ from langchain_core.prompts import ChatPromptTemplate
 
 from langchain_community.document_loaders import UnstructuredFileLoader
 
-# OPENAI_API_KEY = st.secrets["OPENAI_API_KEY"]
-os.environ["OPENAI_API_KEY"] = "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"
+OPENAI_API_KEY = st.secrets["OPENAI_API_KEY"]
+
 # Get all the filenames from the docs folder
 files = glob.glob("./docs/*.txt")