fix warning

Author: fkosar-ql

vpr/src/pack/sync_netlists_to_routing_flat.cpp

@@ -173,7 +173,6 @@ static void sync_pb_routes_to_routing(void){
     auto& device_ctx = g_vpr_ctx.device();
     auto& atom_ctx = g_vpr_ctx.atom();
     auto& cluster_ctx = g_vpr_ctx.mutable_clustering();
-    auto& place_ctx = g_vpr_ctx.placement();
     auto& route_ctx = g_vpr_ctx.routing();
     auto& rr_graph = device_ctx.rr_graph;
 
@@ -336,14 +335,7 @@ static void sync_clustered_netlist_to_routing(void){
 
             int pin_index = rr_graph.node_pin_num(rt_node.inode);
 
-            auto [_, subtile] = get_sub_tile_from_pin_physical_num(physical_tile, pin_index);
-
-            ClusterBlockId clb = place_ctx.grid_blocks().block_at_location({
-                rr_graph.node_xlow(rt_node.inode),
-                rr_graph.node_ylow(rt_node.inode),
-                subtile,
-                rr_graph.node_layer(rt_node.inode)
-            });
+            ClusterBlockId clb = get_cluster_block_from_rr_node(rt_node.inode);
 
             if(!is_pin_on_tile(physical_tile, pin_index))
                 continue;