nbd: remove define-only NBD_MAGIC, previously magic number

commit f4507164 ("nbd: rename the nbd_device variable from lo to
nbd") renamed LO_MAGIC to NBD_MAGIC; commit 5ea8d108 ("nbd:
separate out the config information") removed the last users of that
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Link: https://lore.kernel.org/r/10a80681c5966fed1a1afc696e3db114f481514c.1663280877.git.nabijaczleweli@nabijaczleweli.xyzSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/process/magic-number.rst

@@ -81,7 +81,6 @@ NBD_REQUEST_MAGIC     0x12560953       nbd_request              ``include/linux/
 BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/baycom_epp.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
-LO_MAGIC              0x68797548       nbd_device               ``include/linux/nbd.h``
 NBD_REPLY_MAGIC       0x96744668       nbd_reply                ``include/linux/nbd.h``
 ENI155_MAGIC          0xa54b872d       midway_eprom	        ``drivers/atm/eni.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``

Documentation/translations/it_IT/process/magic-number.rst

@@ -87,7 +87,6 @@ NBD_REQUEST_MAGIC     0x12560953       nbd_request              ``include/linux/
 BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/baycom_epp.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
-LO_MAGIC              0x68797548       nbd_device               ``include/linux/nbd.h``
 NBD_REPLY_MAGIC       0x96744668       nbd_reply                ``include/linux/nbd.h``
 ENI155_MAGIC          0xa54b872d       midway_eprom	        ``drivers/atm/eni.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``

Documentation/translations/zh_CN/process/magic-number.rst

@@ -70,7 +70,6 @@ NBD_REQUEST_MAGIC     0x12560953       nbd_request              ``include/linux/
 BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/baycom_epp.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
-LO_MAGIC              0x68797548       nbd_device               ``include/linux/nbd.h``
 NBD_REPLY_MAGIC       0x96744668       nbd_reply                ``include/linux/nbd.h``
 ENI155_MAGIC          0xa54b872d       midway_eprom	        ``drivers/atm/eni.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``

Documentation/translations/zh_TW/process/magic-number.rst

@@ -73,7 +73,6 @@ NBD_REQUEST_MAGIC     0x12560953       nbd_request              ``include/linux/
 BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/baycom_epp.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``
-LO_MAGIC              0x68797548       nbd_device               ``include/linux/nbd.h``
 NBD_REPLY_MAGIC       0x96744668       nbd_reply                ``include/linux/nbd.h``
 ENI155_MAGIC          0xa54b872d       midway_eprom	        ``drivers/atm/eni.h``
 CODA_MAGIC            0xC0DAC0DA       coda_file_info           ``fs/coda/coda_fs_i.h``

drivers/block/nbd.c

@@ -157,8 +157,6 @@ static struct dentry *nbd_dbg_dir;
 
 #define nbd_name(nbd) ((nbd)->disk->disk_name)
 
-#define NBD_MAGIC 0x68797548
-
 #define NBD_DEF_BLKSIZE_BITS 10
 
 static unsigned int nbds_max = 16;