remove api keys

lib/utils.py

@@ -11,7 +11,7 @@ encoding_name = "p50k_base"
 encoding = tiktoken.get_encoding(encoding_name)
 
 embedding_model = "text-embedding-ada-002"
-openai.api_key = "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"
+openai.api_key = os.environ.get("OPENAI_API_KEY", None)
 
 # read from current directory
 df = pd.read_pickle(Path(__file__).resolve().parent.__str__() + "/../data/lethain.pkl")