Update requirements.txt

requirements.txt

@@ -2,13 +2,10 @@ langchain==0.0.184
 PyPDF2==3.0.1
 python-dotenv==1.0.0
 streamlit==1.18.1
-openai==0.27.6
 faiss-cpu==1.7.4
 altair==4
 tiktoken==0.4.0
-# uncomment to use huggingface llms
-# huggingface-hub==0.14.1
 
-# uncomment to use instructor embeddings
-# InstructorEmbedding==1.0.1
-# sentence-transformers==2.2.2
+huggingface-hub==0.14.1
+InstructorEmbedding==1.0.1
+sentence-transformers==2.2.2