fix: lint

Author: f-allian

causal_testing/testing/estimators.py

@@ -382,7 +382,6 @@ def estimate_ate(self) -> tuple[pd.Series, list[pd.Series, pd.Series]]:
 
         # Create an empty individual for the control and treated
         individuals = pd.DataFrame(1, index=["control", "treated"], columns=model.params.index)
-        
 
         # For Pandas version > 2, we need to explicitly state that the dataframe takes floating-point values
         individuals = individuals.astype(float)