tests: Remove a warning

Author: jorisv

test/src/dense_qp_wrapper.cpp

@@ -7594,7 +7594,6 @@ TEST_CASE("ProxQP::dense: test memory allocation when estimating biggest "
           "eigenvalue with power iteration")
 {
   double sparsity_factor = 1.;
-  T tol = T(1e-3);
   utils::rand::set_seed(1);
   dense::isize dim = 2;
   dense::isize n_eq(dim);
@@ -7614,4 +7613,4 @@ TEST_CASE("ProxQP::dense: test memory allocation when estimating biggest "
   PROXSUITE_EIGEN_MALLOC_NOT_ALLOWED();
   dense::power_iteration(H, dw, rhs, err_v, 1.E-6, 10000);
   PROXSUITE_EIGEN_MALLOC_ALLOWED();
-}
+}