Update os environment variables

app.py

@@ -10,8 +10,8 @@ from agent import build_graph
 # --- Constants ---
 DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
-os.environ["TAVILY_API_KEY"] = os.getenv("TAVILY_API_KEY")
-os.environ["GROQ_API_KEY"] = os.getenv("GROQ_API_KEY")
+os.getenv("TAVILY_API_KEY")
+os.getenv("GROQ_API_KEY")
 
 # --- Basic Agent Definition ---
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------