[f2dace/GPU] Const qualifier specified multiple times.

Reproducing details will come later, but somehow in the GPU-offloaded version of velocity tendencies we have argument where `const` is specified multiple times.

```
codegen/stage6/velocity_no_nproma_if_prop_lvn_only_1_istep_1/src/cuda/velocity_no_nproma_if_prop_lvn_only_1_istep_1_cuda.cu(796): warning #83-D: type qualifier specified more than once
__attribute__((device)) __inline__ __attribute__((always_inline)) void loop_body_34_2_30(const const double& cfl_w_limit, const const double& dtime, const double * __restrict__ gpu___CG_p_int__m_c_lin_e, const double * __restrict__ gpu___CG_p_int__m_geofac_grdiv, const double * __restrict__ gpu___CG_p_metrics__m_ddqz_z_full_e, const double * __restrict__ gpu___CG_p_patch__CG_edges__m_area_edge, const int * __restrict__ gpu___CG_p_patch__CG_edges__m_cell_blk, const int * __restrict__ gpu___CG_p_patch__CG_edges__m_cell_idx, const double * __restrict__ gpu___CG_p_patch__CG_edges__m_inv_primal_edge_length, const int * __restrict__ gpu___CG_p_patch__CG_edges__m_quad_blk, const int * __restrict__ gpu___CG_p_patch__CG_edges__m_quad_idx, const double * __restrict__ gpu___CG_p_patch__CG_edges__m_tangent_orientation, const int * __restrict__ gpu___CG_p_patch__CG_edges__m_vertex_blk, const int * __restrict__ gpu___CG_p_patch__CG_edges__m_vertex_idx, const double * __restrict__ gpu___CG_p_prog__m_vn, const int * __restrict__ gpu_levelmask, const double * __restrict__ gpu_z_w_con_c_full, const double * __restrict__ gpu_zeta, const const double& scalfac_exdiff, double * __restrict__ gpu___CG_p_diag__m_ddt_vn_apc_pc, int __f2dace_SA_area_edge_d_0_s_188_edges_p_patch_4, int __f2dace_SA_c_lin_e_d_0_s_25_p_int_6, int __f2dace_SA_c_lin_e_d_1_s_26_p_int_6, int __f2dace_SA_cell_blk_d_0_s_167_edges_p_patch_4, int __f2dace_SA_cell_blk_d_1_s_168_edges_p_patch_4, int __f2dace_SA_cell_idx_d_0_s_164_edges_p_patch_4, int __f2dace_SA_cell_idx_d_1_s_165_edges_p_patch_4, int __f2dace_SA_ddqz_z_full_e_d_0_s_314_p_metrics_8, int __f2dace_SA_ddt_vn_apc_pc_d_0_s_300_p_diag_9, int __f2dace_SA_ddt_vn_apc_pc_d_2_s_302_p_diag_9, int __f2dace_SA_geofac_grdiv_d_0_s_37_p_int_6, int __f2dace_SA_geofac_grdiv_d_1_s_38_p_int_6, int __f2dace_SA_inv_primal_edge_length_d_0_s_184_edges_p_patch_4, int __f2dace_SA_quad_blk_d_0_s_181_edges_p_patch_4, int __f2dace_SA_quad_blk_d_1_s_182_edges_p_patch_4, int __f2dace_SA_quad_idx_d_0_s_178_edges_p_patch_4, int __f2dace_SA_quad_idx_d_1_s_179_edges_p_patch_4, int __f2dace_SA_tangent_orientation_d_0_s_176_edges_p_patch_4, int __f2dace_SA_vertex_blk_d_0_s_173_edges_p_patch_4, int __f2dace_SA_vertex_blk_d_1_s_174_edges_p_patch_4, int __f2dace_SA_vertex_idx_d_0_s_170_edges_p_patch_4, int __f2dace_SA_vertex_idx_d_1_s_171_edges_p_patch_4, int __f2dace_SA_vn_d_0_s_288_p_prog_7, int __f2dace_SOA_area_edge_d_0_s_188_edges_p_patch_4, int __f2dace_SOA_area_edge_d_1_s_189_edges_p_patch_4, int __f2dace_SOA_c_lin_e_d_0_s_25_p_int_6, int __f2dace_SOA_c_lin_e_d_1_s_26_p_int_6, int __f2dace_SOA_c_lin_e_d_2_s_27_p_int_6, int __f2dace_SOA_cell_blk_d_0_s_167_edges_p_patch_4, int __f2dace_SOA_cell_blk_d_1_s_168_edges_p_patch_4, int __f2dace_SOA_cell_blk_d_2_s_169_edges_p_patch_4, int __f2dace_SOA_cell_idx_d_0_s_164_edges_p_patch_4, int __f2dace_SOA_cell_idx_d_1_s_165_edges_p_patch_4, int __f2dace_SOA_cell_idx_d_2_s_166_edges_p_patch_4, int __f2dace_SOA_ddqz_z_full_e_d_0_s_314_p_metrics_8, int __f2dace_SOA_ddqz_z_full_e_d_1_s_315_p_metrics_8, int __f2dace_SOA_ddqz_z_full_e_d_2_s_316_p_metrics_8, int __f2dace_SOA_ddt_vn_apc_pc_d_0_s_300_p_diag_9, int __f2dace_SOA_ddt_vn_apc_pc_d_1_s_301_p_diag_9, int __f2dace_SOA_ddt_vn_apc_pc_d_2_s_302_p_diag_9, int __f2dace_SOA_ddt_vn_apc_pc_d_3_s_303_p_diag_9, int __f2dace_SOA_geofac_grdiv_d_0_s_37_p_int_6, int __f2dace_SOA_geofac_grdiv_d_1_s_38_p_int_6, int __f2dace_SOA_geofac_grdiv_d_2_s_39_p_int_6, int __f2dace_SOA_inv_primal_edge_length_d_0_s_184_edges_p_patch_4, int __f2dace_SOA_inv_primal_edge_length_d_1_s_185_edges_p_patch_4, int __f2dace_SOA_quad_blk_d_0_s_181_edges_p_patch_4, int __f2dace_SOA_quad_blk_d_1_s_182_edges_p_patch_4, int __f2dace_SOA_quad_blk_d_2_s_183_edges_p_patch_4, int __f2dace_SOA_quad_idx_d_0_s_178_edges_p_patch_4, int __f2dace_SOA_quad_idx_d_1_s_179_edges_p_patch_4, int __f2dace_SOA_quad_idx_d_2_s_180_edges_p_patch_4, int __f2dace_SOA_tangent_orientation_d_0_s_176_edges_p_patch_4, int __f2dace_SOA_tangent_orientation_d_1_s_177_edges_p_patch_4, int __f2dace_SOA_vertex_blk_d_0_s_173_edges_p_patch_4, int __f2dace_SOA_vertex_blk_d_1_s_174_edges_p_patch_4, int __f2dace_SOA_vertex_blk_d_2_s_175_edges_p_patch_4, int __f2dace_SOA_vertex_idx_d_0_s_170_edges_p_patch_4, int __f2dace_SOA_vertex_idx_d_1_s_171_edges_p_patch_4, int __f2dace_SOA_vertex_idx_d_2_s_172_edges_p_patch_4, int __f2dace_SOA_vn_d_0_s_288_p_prog_7, int __f2dace_SOA_vn_d_1_s_289_p_prog_7, int __f2dace_SOA_vn_d_2_s_290_p_prog_7, int _for_it_47, int64_t _for_it_52, int64_t _for_it_53, int64_t ntnd, int tmp_struct_symbol_2, int tmp_struct_symbol_8) {
```