Update app.py

app.py

@@ -6,7 +6,6 @@ from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import FAISS
 from langchain.llms import CTransformers
 from langchain.chains import ConversationalRetrievalChain
-from dl_hf_model import dl_hf_model
 from ctransformers import AutoModelForCausalLM
 from langchain_g4f import G4FLLM
 from g4f import Provider, models