Fix linter issues and remove unused code

Author: peanutfun

climada/util/calibrate/bayesian_optimizer.py

@@ -10,7 +10,6 @@
 from bayes_opt import BayesianOptimization
 from bayes_opt.target_space import TargetSpace
 
-from climada.engine import Impact
 from .base import Output, Optimizer
 
 
@@ -217,6 +216,8 @@ def plot_p_space(
         min_color : str, optional
             Color for plotting the minimum. Defaults to ``"r"`` (red).
         """
+        # pylint: disable=invalid-name
+
         if p_space_df is None:
             p_space_df = self.p_space_to_dataframe()
 

climada/util/calibrate/func.py

@@ -95,7 +95,7 @@ def run(self, **opt_kwargs) -> ScipyMinimizeOptimizerOutput:
             else None
         )
 
-        x0 = np.array(list(params_init.values()))
+        x0 = np.array(list(params_init.values()))  # pylint: disable=invalid-name
         res = minimize(
             fun=self._opt_func,
             x0=x0,