Update utils/haystack.py

utils/haystack.py

@@ -1,10 +1,8 @@
 import streamlit as st
 from haystack import Pipeline
-from haystack.components.retrievers.in_memory import InMemoryBM25Retriever
 from haystack_integrations.document_stores.pinecone import PineconeDocumentStore
 from haystack.components.builders.answer_builder import AnswerBuilder
 from haystack.components.builders.prompt_builder import PromptBuilder
-from haystack.document_stores.in_memory import InMemoryDocumentStore
 from haystack_integrations.components.embedders.cohere import CohereTextEmbedder
 from haystack_integrations.components.retrievers.pinecone import PineconeEmbeddingRetriever
 from haystack_integrations.components.generators.cohere import CohereGenerator