fix: remove unused dependency

app.py

@@ -1,12 +1,10 @@
 import time
-import uuid
 import openai
 import os
 import pandas as pd
 import numpy as np
 import gradio as gr
 from llama_index import GPTSimpleVectorIndex
-from gpt_index.indices.struct_store.pandas import GPTPandasIndex
 from openai.embeddings_utils import get_embedding, cosine_similarity
 
 openai.api_key = os.getenv("OPENAI_API_KEY")