[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/mplhep/utils.py

@@ -2,7 +2,6 @@
 
 import copy
 import warnings
-import logging
 from numbers import Real
 from typing import TYPE_CHECKING, Any, Iterable, Sequence
 
@@ -293,6 +292,6 @@ def stack(*plottables):
         _baseline[_mask] = np.nan
         plottables[i].baseline = _baseline
         baseline += np.nan_to_num(plottables[i].values, 0)
-        plottables[i].values = np.nansum([plottables[i].values , _baseline], axis=0)
+        plottables[i].values = np.nansum([plottables[i].values, _baseline], axis=0)
         plottables[i].values[_mask] = np.nan
     return plottables