remove unused ignore

Author: bhimrazy

src/lightning/fabric/utilities/spike.py

@@ -133,9 +133,9 @@ def _check_rtol(self, val_a: Union[float, torch.Tensor], val_b: Union[float, tor
 
     def _is_better(self, diff_val: torch.Tensor) -> bool:
         if self.mode == "min":
-            return bool((diff_val <= 0.0).all())  # type: ignore[operator]
+            return bool((diff_val <= 0.0).all())
         if self.mode == "max":
-            return bool((diff_val >= 0).all())  # type: ignore[operator]
+            return bool((diff_val >= 0).all())
 
         raise ValueError(f"Invalid mode. Has to be min or max, found {self.mode}")