Update requirements.txt

requirements.txt

@@ -1,6 +1,2 @@
-requests==2.28.1 
-gradio==3.38.0
-openai==0.28 
-python-dotenv==1.0.0 
-httpx==0.21.1 
-httpcore==0.14.7
+gradio==3.38.0
+openai==0.28