[cleanup][evolution] remove debug output.

dune/fem-dg/algorithm/evolution.hh

@@ -439,12 +439,9 @@ namespace Fem
         // CALLER
         adaptCaller_.solveStart( this, loop, tp );
 
-        Dune :: Timer timer;
         // perform the solve for one time step, i.e. solve ODE
         solve( loop, tp );
 
-        std::cout << "Solve of timestep took " << timer.elapsed() << std::endl;
-
         //go to next time step, if time step was invalidated by solver
         if( tp.timeStepValid() )
         {