Update app.py

app.py

@@ -3,7 +3,7 @@ from langchain.docstore.document import Document as LangchainDocument
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from sentence_transformers import SentenceTransformer
 from langchain_community.embeddings import HuggingFaceEmbeddings
-from langchain_community.vectorstores import faiss
+#from langchain_community.vectorstores import faiss
 from langchain.prompts import PromptTemplate
 #from langchain.chains import ConversationalRetrievalChain
 #from transformers import pipeline