Update app.py

app.py

@@ -46,12 +46,9 @@ docs = split_docs(documents, 450, 20)
 
 
 
-chroma_db = chroma_db(docs, hf)
+retriever = retriever_from_chroma(docs, hf, "mmr", 6)
 
 
-retriever = retriever_from_chroma(chroma_db,"mmr", 6)
-
-# Set up LlamaCpp model
 callback_manager = CallbackManager([StreamingStdOutCallbackHandler()])
 
 @st.cache_resource