libceph: remove the unused macro AES_KEY_SIZE

This removes the no longer used macro AES_KEY_SIZE as no functions use
this macro anymore and thus this macro can be removed due it no longer
being required.

Signed-off-by: Nicholas Krause <[e-mail]>
Signed-off-by: Ilya Dryomov <[e-mail]>

net/ceph/crypto.c

···
 	return 0;
 }
 
-
-
-#define AES_KEY_SIZE 16
-
 static struct crypto_blkcipher *ceph_crypto_alloc_cipher(void)
 {
 	return crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);