Removed unused profiler

src/maxwell/maxwell_solver.cpp

@@ -242,22 +242,16 @@ void solver_mainloop(const model& mod, State& state, maxwell::parameter_loader&
 
     prepare_sources(mod, state, mpl);
 
-#ifdef ENABLE_PROFILING
-    auto& solver_prof = state.logger.get_profiler("solver iteration");
-#endif /* ENABLE_PROFILING */
-
     for(size_t i = 0; i < num_timesteps; i++)
     {
         timecounter_cpu tc;
         tc.tic();
-        PROFILER_TIC(solver_prof);
 
         mpl.call_timestep_callback(i);
         timestep(mod, state, mpl, ti);
         do_sources(mod, state, mpl);
         swap(state, mpl);
 
-        PROFILER_TOC(solver_prof);
         double time = tc.toc();
         total_iteration_time += time;