Update app.py

app.py

@@ -15,9 +15,7 @@ from helpers import (
 from file_loader import get_vectorstore
 # import asyncio
 
-if "GOOGLE_API_KEY" not in os.environ:
-    os.environ["GOOGLE_API_KEY"] = "AIzaSyDJ4vIKuIBIPNHATLxnoHlagXWbsAz-vRs"
-key = "AIzaSyDJ4vIKuIBIPNHATLxnoHlagXWbsAz-vRs"
+key = os.getenv("GOOGLE_API_KEY")
 
 # Cấu hình API key cho Google GenAI
 genai.configure(api_key=key)