MIPS: remove define-only GDA_MAGIC, previously magic number

The last user was removed in the 2.6.4 "MIPS mega-patch", pre-git

Found with
grep MAGIC Documentation/process/magic-number.rst | while read -r mag _;
do git grep -wF "$mag"  | grep -ve '^Documentation.*magic-number.rst:' \
-qe ':#define '"$mag" || git grep -wF "$mag" | while IFS=: read -r f _;
do sed -i '/\b'"$mag"'\b/d' "$f"; done ; done
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Link: https://lore.kernel.org/r/c2e7510beebdd698e20d0704712e623fad00fc1c.1663280877.git.nabijaczleweli@nabijaczleweli.xyzSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/process/magic-number.rst

@@ -85,7 +85,6 @@ BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/ba
 SAVEKMSG_MAGIC2       0x4B4D5347       savekmsg                 ``arch/*/amiga/config.c``
 COW_MAGIC             0x4f4f4f4d       cow_header_v1            ``arch/um/drivers/ubd_user.c``
 SAVEKMSG_MAGIC1       0x53415645       savekmsg                 ``arch/*/amiga/config.c``
-GDA_MAGIC             0x58464552       gda                      ``arch/mips/include/asm/sn/gda.h``
 EEPROM_MAGIC_VALUE    0x5ab478d2       lanai_dev                ``drivers/atm/lanai.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``

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

@@ -91,7 +91,6 @@ BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/ba
 SAVEKMSG_MAGIC2       0x4B4D5347       savekmsg                 ``arch/*/amiga/config.c``
 COW_MAGIC             0x4f4f4f4d       cow_header_v1            ``arch/um/drivers/ubd_user.c``
 SAVEKMSG_MAGIC1       0x53415645       savekmsg                 ``arch/*/amiga/config.c``
-GDA_MAGIC             0x58464552       gda                      ``arch/mips/include/asm/sn/gda.h``
 EEPROM_MAGIC_VALUE    0x5ab478d2       lanai_dev                ``drivers/atm/lanai.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``

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

@@ -75,7 +75,6 @@ BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/ba
 SAVEKMSG_MAGIC2       0x4B4D5347       savekmsg                 ``arch/*/amiga/config.c``
 COW_MAGIC             0x4f4f4f4d       cow_header_v1            ``arch/um/drivers/ubd_user.c``
 SAVEKMSG_MAGIC1       0x53415645       savekmsg                 ``arch/*/amiga/config.c``
-GDA_MAGIC             0x58464552       gda                      ``arch/mips/include/asm/sn/gda.h``
 EEPROM_MAGIC_VALUE    0x5ab478d2       lanai_dev                ``drivers/atm/lanai.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``

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

@@ -78,7 +78,6 @@ BAYCOM_MAGIC          0x19730510       baycom_state             ``drivers/net/ba
 SAVEKMSG_MAGIC2       0x4B4D5347       savekmsg                 ``arch/*/amiga/config.c``
 COW_MAGIC             0x4f4f4f4d       cow_header_v1            ``arch/um/drivers/ubd_user.c``
 SAVEKMSG_MAGIC1       0x53415645       savekmsg                 ``arch/*/amiga/config.c``
-GDA_MAGIC             0x58464552       gda                      ``arch/mips/include/asm/sn/gda.h``
 EEPROM_MAGIC_VALUE    0x5ab478d2       lanai_dev                ``drivers/atm/lanai.c``
 HDLCDRV_MAGIC         0x5ac6e778       hdlcdrv_state            ``include/linux/hdlcdrv.h``
 KV_MAGIC              0x5f4b565f       kernel_vars_s            ``arch/mips/include/asm/sn/klkernvars.h``

arch/mips/include/asm/sn/gda.h

@@ -16,8 +16,6 @@
 
 #include <asm/sn/addrs.h>
 
-#define GDA_MAGIC	0x58464552
-
 /*
  * GDA Version History
  *