Update app.py

app.py

@@ -3,10 +3,8 @@ import json
 import gradio as gr
 
 from huggingface_hub import HfApi, login
-from PyPDF2 import PdfReader
 from langchain_huggingface import HuggingFaceEmbeddings
 from langchain.text_splitter import RecursiveCharacterTextSplitter
-from langchain_groq import ChatGroq
 from dotenv import load_dotenv
 from langchain.docstore.document import Document
 from langchain.schema import Document