Update app.py

app.py

@@ -1,14 +1,10 @@
-from haystack.nodes import DensePassageRetriever
-from haystack.document_stores import FAISSDocumentStore
-from haystack.pipelines import RetrievalQA
-from transformers import pipeline
 from langchain.document_loaders import PyPDFLoader
 from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import FAISS
+from transformers import pipeline
 import gradio as gr
 
-# Step 1: Initialize Document Store and Vector Store
-document_store = None  # Placeholder for FAISS document store
+# Step 1: Initialize Vector Store
 vector_store = None
 
 # Step 2: Upload and Process PDF Documents