message: remove complex from inner reduction factor in IR reference example
diff: @@ -101,10 +101,11 @@ TYPED_TEST(Ir, SolvesTriangularSystemWithIterativeInnerSolver)
  using Mtx = typename TestFixture::Mtx;
  using value_type = typename TestFixture::value_type;
  + const gko::remove_complex<value_type> inner_reduction_factor = 1e-2;
  auto inner_solver_factory =
  gko::solver::Gmres<value_type>::build()
  .with_criteria(gko::stop::ResidualNormReduction<value_type>::build()
  - .with_reduction_factor(1e-2)
  + .with_reduction_factor(inner_reduction_factor)
  .on(this->exec))
  .on(this->exec);
  