cleanup comment

dune/functions/functionspacebases/hermitebasis.hh

@@ -151,17 +151,6 @@ namespace Dune
           {
             return derivative(t.f_); // TODO return a LocalValuedFunction here
           }
-
-          // auto derivative(const LocalCoordinate &xi) const
-          // {
-          //   // wrapping this with makeFunctionWithCallOperator causes a loss of the geometry when used with a localFunction (e.g. from Dune::Functions::interpolate)
-          //   auto &&df = Dune::Impl::makeDerivative<LocalCoordinate>(f_);
-
-          //   // We assume that df is the global derivative, evaluated in local coordinates. This is true for Dune::Functions::interpolate and feels consistent with GlobalValuedFiniteElement.
-          //   // TODO call derivative instead of makeDerivative here and instead call makeDerivative more up the call chain, since makeDerivative(localFunction) might return local derivative() (or runtimeerrors)
-
-          //   return df(xi);
-          // }
         };
       };