CLEANUP: listener/thread: remove now unused bind_conf's bind_tgroup/bind_thread

Not needed anymore since last commit, let's get rid of it.
diff --git a/src/cfgparse.c b/src/cfgparse.c
index 659f239..75d0b56 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -2954,8 +2954,7 @@
 
 			/* detect and address thread affinity inconsistencies */
 			err = NULL;
-			if (thread_resolve_group_mask(&bind_conf->thread_set, 1,
-			                              &bind_conf->bind_tgroup, &bind_conf->bind_thread, &err) < 0) {
+			if (thread_resolve_group_mask(&bind_conf->thread_set, (curproxy == global.cli_fe) ? 1 : 0, &err) < 0) {
 				ha_alert("Proxy '%s': %s in 'bind %s' at [%s:%d].\n",
 					   curproxy->id, err, bind_conf->arg, bind_conf->file, bind_conf->line);
 				free(err);
@@ -4436,8 +4435,7 @@
 					}
 
 					err = NULL;
-					if (thread_resolve_group_mask(&bind_conf->thread_set, (curproxy == global.cli_fe) ? 1 : 0,
-								      &bind_conf->bind_tgroup, &bind_conf->bind_thread, &err) < 0) {
+					if (thread_resolve_group_mask(&bind_conf->thread_set, 1, &err) < 0) {
 						ha_alert("Peers section '%s': %s in 'bind %s' at [%s:%d].\n",
 							 curpeers->peers_fe->id, err, bind_conf->arg, bind_conf->file, bind_conf->line);
 						free(err);