[shallowwater] remove mobility comment

dumux/flux/shallowwater/riemannproblem.hh

@@ -142,8 +142,8 @@ std::array<Scalar,3> riemannProblem(const Scalar waterDepthLeft,
                                                          lowerWaterDepthFluxLimiting);
     std::array<Scalar, 3> localFlux;
     localFlux[0] = riemannResult.flux[0] * mobility;
-    localFlux[1] = (riemannResult.flux[1] - hdxzl);// * mobility;
-    localFlux[2] = (riemannResult.flux[2] - hdyzl);// * mobility;
+    localFlux[1] = (riemannResult.flux[1] - hdxzl);
+    localFlux[2] = (riemannResult.flux[2] - hdyzl);
 
     return localFlux;
 }