butterflies: remove unused stat

src/modules/butterflies/butterflies_stats.c

@@ -12,6 +12,7 @@
 #include "temporal/phase_names.h"
 #include "temporal/years.h"
 
+
 const char *bf_get_stats_field_name(enum butterfly_stats which)
 {
         switch (which) {
@@ -25,8 +26,6 @@ const char *bf_get_stats_field_name(enum butterfly_stats which)
                         return "unpopulated_unfit";
                 case BF_STAT_EXCLUDED:
                         return "excluded";
-                case BF_STAT_GENERATION_ACTIVE:
-                        return "generation_active";
                 case BF_POPULATED_AT_DISPERSAL:
                         return "populated_at_dispersal";
 
@@ -51,6 +50,7 @@ const char *bf_get_stats_field_name(enum butterfly_stats which)
         exit_cats(EXIT_FAILURE);
 }
 
+
 struct string_array *bf_assemble_stats(struct cats_configuration *conf, struct cats_grid *grid, bool header)
 {
         struct conf_data_butterflies *module_conf = CATS_MODULE_DATA;
@@ -125,6 +125,7 @@ void bf_stats_write(struct cats_configuration *conf, struct cats_grid *grid)
         free_string_array(&data);
 }
 
+
 void bf_area_stats_gather(struct cats_grid *grid, struct cats_thread_info *ts)
 {
         struct conf_data_butterflies *module_conf = CATS_MODULE_DATA;
@@ -138,7 +139,6 @@ void bf_area_stats_gather(struct cats_grid *grid, struct cats_thread_info *ts)
         const int64_t id_unpop_unfit = module_conf->stat_ids[BF_STAT_UNPOPULATED_UNFIT];
         const int32_t grid_id = grid->id;
 
-        //const cats_dt_rates zt = grid->param.ZT;
         const cats_dt_rates ot = grid->param.OT;
         struct statistics *stats = &ts->stats[grid_id];
 

src/modules/butterflies/butterflies_stats.h

@@ -13,7 +13,6 @@ enum butterfly_stats {
     BF_STAT_UNPOPULATED_FIT,
     BF_STAT_UNPOPULATED_UNFIT,
     BF_STAT_EXCLUDED,
-    BF_STAT_GENERATION_ACTIVE,
     BF_OUTPUT_STAT_MAX,
     BF_POPULATED_AT_DISPERSAL,
     BF_RANDOM_WALK_COUNT,