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

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

attune/_tune.py

@@ -117,4 +117,3 @@ def monotonic(self) -> bool:
         """Whether or not the dependent variable moves monotonically."""
         checks = np.gradient(self.dependent) <= 0
         return checks.all() or (not checks.any())
-