It was scheduled for removal in kernel v5.18 commit 
6c405b24097c
("btrfs: deprecate BTRFS_IOC_BALANCE ioctl") thus its time has come.
Reviewed-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
                return btrfs_ioctl_fs_info(fs_info, argp);
        case BTRFS_IOC_DEV_INFO:
                return btrfs_ioctl_dev_info(fs_info, argp);
-       case BTRFS_IOC_BALANCE:
-               return btrfs_ioctl_balance(file, NULL);
        case BTRFS_IOC_TREE_SEARCH:
                return btrfs_ioctl_tree_search(inode, argp);
        case BTRFS_IOC_TREE_SEARCH_V2: