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

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Author: pre-commit-ci[bot]

xarray/plot/utils.py

@@ -248,9 +248,7 @@ def _determine_cmap_params(
             isinstance(levels, Iterable) and levels[0] * levels[-1] < 0
         )
         # kwargs not specific about divergent or not: infer defaults from data
-        divergent = (
-            (vmin < 0 < vmax) or not center_is_none or levels_are_divergent
-        )
+        divergent = (vmin < 0 < vmax) or not center_is_none or levels_are_divergent
     else:
         divergent = False