Don't include bad state in one line output

google_stocks/__init__.py

@@ -146,7 +146,4 @@ class Index:
     @property
     def one_line(self) -> str:
         """Index name, price and price change."""
-        return (
-            f"{self.title}: {self.price} ({self.percent_change}%) "
-            + f"{self.state} {self.timestamp}"
-        )
+        return f"{self.title}: {self.price} ({self.percent_change}%)  {self.timestamp}"