message: remove unnecessary logger and stop criterion
diff: @@ -158,9 +158,6 @@ void Bicg<ValueType, IndexType>::apply_impl(const LinOp *b, LinOp *x) const
  this->template log<log::Logger::iteration_complete>(this, iter, r.get(),
  dense_x);
  - this->template log<log::Logger::iteration_complete>(this, iter,
  - r2.get(), dense_x);
  -
  if (stop_criterion->update()
  .num_iterations(iter)
  .residual(r.get())
  @@ -168,13 +165,6 @@ void Bicg<ValueType, IndexType>::apply_impl(const LinOp *b, LinOp *x) const
  .check(RelativeStoppingId, true, &stop_status, &one_changed)) {
  break;
  }
  - if (stop_criterion->update()
  - .num_iterations(iter)
  - .residual(r2.get())
  - .solution(dense_x)
  - .check(RelativeStoppingId, true, &stop_status, &one_changed)) {
  - break;
  - }
  exec->run(bicg::make_step_1(p.get(), z.get(), p2.get(), z2.get(),
  rho.get(), prev_rho.get(), &stop_status));
  