Update requirements.txt

requirements.txt

@@ -7,6 +7,5 @@ pandas==2.1.1
 sentence-transformers==2.2.2
 chromadb==0.4.2
 nltk==3.8.1
-ollama==0.0.2
-langchain-huggingface==0.0.4
-datasets==2.15.1
+ollama
+langchain-huggingface