Update app.py

app.py

@@ -28,8 +28,7 @@ splits = text_splitter.split_documents(doc)
 
 # Create a vector store and retriever
 
-from langchain_chroma import Chroma
-from langchain_chroma import chromadb
+
 
 # Use Chroma in-memory mode for temporary storage
 vectorstore = Chroma.from_documents(documents=splits, embedding=gemini_embeddings, persist_directory=None)