Update requirements.txt

requirements.txt

@@ -1,13 +1,4 @@
-langchain==0.0.184
-PyPDF2==3.0.1
-python-dotenv==1.0.0
-streamlit==1.18.1
-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
+transformers
+torch
+streamlit
+sentencepiece