cleanup

Signed-off-by: Thijs Baaijen <[email protected]>

Author: Thijss

src/power_grid_model_ds/_core/fancypy.py

@@ -15,9 +15,6 @@
 
 T = TypeVar("T", bound="FancyArray")
 
-if TYPE_CHECKING:
-    pass
-
 
 def concatenate(fancy_array: T, *other_arrays: Union[T, np.ndarray]) -> T:
     """Concatenate arrays."""