Cosmetics

nifty5/library/gaussian_energy.py

@@ -61,6 +61,4 @@ class GaussianEnergy(Energy):
     @property
     @memo
     def curvature(self):
-        if self._cov is None:
-            return SandwichOperator.make(self._inp.gradient)
         return SandwichOperator.make(self._inp.gradient, self._cov.inverse)