set_capacity() has been called in bcache_device_init(),
remove the redundant one.
Signed-off-by: NYijing Wang <wangyijing@huawei.com>
Reviewed-by: NEric Wheeler <bcache@linux.ewheeler.net>
Acked-by: NColy Li <colyli@suse.de>
Signed-off-by: NJens Axboe <axboe@kernel.dk>