storage: remove unused declaration

src/lxc/lxccontainer.c

@@ -61,6 +61,7 @@
 #include "start.h"
 #include "state.h"
 #include "storage.h"
+#include "storage_utils.h"
 #include "storage/btrfs.h"
 #include "storage/overlay.h"
 #include "sync.h"

src/lxc/storage/storage.h

@@ -136,8 +136,6 @@ extern struct lxc_storage *storage_create(const char *dest, const char *type,
 					  struct bdev_specs *specs);
 extern void storage_put(struct lxc_storage *bdev);
 extern bool storage_destroy(struct lxc_conf *conf);
-
-extern int storage_destroy_wrapper(void *data);
 extern bool rootfs_is_blockdev(struct lxc_conf *conf);
 extern char *lxc_storage_get_path(char *src, const char *prefix);