Removing unused-parameter from build_rr_chain function

Author: Muhammad Haris Zafar

vpr/src/route/rr_graph.cpp

@@ -231,7 +231,6 @@ static void build_rr_chan(RRGraphBuilder& rr_graph_builder,
                           const t_chan_details& chan_details_x,
                           const t_chan_details& chan_details_y,
                           t_rr_edge_info_set& created_rr_edges,
-                          t_rr_graph_storage& L_rr_node,
                           const int wire_to_ipin_switch,
                           const enum e_directionality directionality);
 
@@ -1223,7 +1222,7 @@ static std::function<void(t_chan_width*)> alloc_and_load_rr_graph(RRGraphBuilder
                               CHANX_COST_INDEX_START,
                               max_chan_width, grid, tracks_per_chan,
                               sblock_pattern, Fs / 3, chan_details_x, chan_details_y,
-                              rr_edges_to_create, L_rr_node,
+                              rr_edges_to_create,
                               wire_to_ipin_switch,
                               directionality);
 
@@ -1238,7 +1237,7 @@ static std::function<void(t_chan_width*)> alloc_and_load_rr_graph(RRGraphBuilder
                               CHANX_COST_INDEX_START + num_seg_types,
                               max_chan_width, grid, tracks_per_chan,
                               sblock_pattern, Fs / 3, chan_details_x, chan_details_y,
-                              rr_edges_to_create, L_rr_node,
+                              rr_edges_to_create,
                               wire_to_ipin_switch,
                               directionality);
 
@@ -1527,7 +1526,6 @@ static void build_rr_chan(RRGraphBuilder& rr_graph_builder,
                           const t_chan_details& chan_details_x,
                           const t_chan_details& chan_details_y,
                           t_rr_edge_info_set& rr_edges_to_create,
-                          t_rr_graph_storage& L_rr_node,
                           const int wire_to_ipin_switch,
                           const enum e_directionality directionality) {
     /* this function builds both x and y-directed channel segments, so set up our