Remove unused discoverable variable from mgmt_update_powered
diff --git a/plugins/mgmtops.c b/plugins/mgmtops.c
index 9e1cfac..b831044 100644
--- a/plugins/mgmtops.c
+++ b/plugins/mgmtops.c
@@ -207,7 +207,7 @@
 {
 	struct controller_info *info;
 	struct btd_adapter *adapter;
-	gboolean pairable, discoverable;
+	gboolean pairable;
 	uint8_t on_mode;
 
 	if (index > max_index) {
@@ -238,8 +238,6 @@
 
 	btd_adapter_get_mode(adapter, NULL, &on_mode, &pairable);
 
-	discoverable = (on_mode == MODE_DISCOVERABLE);
-
 	if (on_mode == MODE_DISCOVERABLE && !info->discoverable)
 		mgmt_set_discoverable(index, TRUE);
 	else if (on_mode == MODE_CONNECTABLE && !info->connectable)