find out function of apikey='none'?

app.py

@@ -1,8 +1,8 @@
 import os
 
 # Init with fake key
-if 'OPENAI_API_KEY' not in os.environ:
-    os.environ['OPENAI_API_KEY'] = 'none'
+#if 'OPENAI_API_KEY' not in os.environ:
+#    os.environ['OPENAI_API_KEY'] = 'none'
 
 import openai
 import pandas as pd
@@ -147,9 +147,4 @@ with st.sidebar:
 
 # Execute agent on user input
 if user_input := st.chat_input():
-    if ss.get('api_key') is not None:
-        os.environ['OPENAI_API_KEY'] = ss.get('api_key')
-
     run_prompt(user_input)
-    os.environ['OPENAI_API_KEY'] = 'none'
-