lxccontainer: remove locks from set_cgroup_item()

src/lxc/lxccontainer.c

@@ -3249,13 +3249,8 @@ static bool do_lxcapi_set_cgroup_item(struct lxc_container *c, const char *subsy
 	if (!cgroup_ops)
 		return false;
 
-	if (container_disk_lock(c))
-		return false;
-
 	ret = cgroup_ops->set(cgroup_ops, subsys, value, c->name, c->config_path);
 
-	container_disk_unlock(c);
-
 	cgroup_exit(cgroup_ops);
 
 	return ret == 0;