Documentation: zh: remove references to IrDA

These lines blame back to their first appearance which cites linux-2.6,
and IrDA was finally fully removed in 4.17 with commit d64c2a76
("staging: irda: remove the irda network stack and drivers")
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Link: https://lore.kernel.org/r/d07ce5b1bc173fd02b7e5b708beb81b9432745f8.1663280877.git.nabijaczleweli@nabijaczleweli.xyzSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

@@ -90,5 +90,3 @@ QUEUE_MAGIC_FREE      0xf7e1c9a3       queue_entry              ``drivers/scsi/a
 QUEUE_MAGIC_USED      0xf7e1cc33       queue_entry              ``drivers/scsi/arm/queue.c``
 NMI_MAGIC             0x48414d4d455201 nmi_s                    ``arch/mips/include/asm/sn/nmi.h``
 ===================== ================ ======================== ==========================================
-
-IrDA子系统也使用了大量的自己的魔术值，查看include/net/irda/irda.h来获取他们完整的信息。

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

@@ -93,5 +93,3 @@ QUEUE_MAGIC_FREE      0xf7e1c9a3       queue_entry              ``drivers/scsi/a
 QUEUE_MAGIC_USED      0xf7e1cc33       queue_entry              ``drivers/scsi/arm/queue.c``
 NMI_MAGIC             0x48414d4d455201 nmi_s                    ``arch/mips/include/asm/sn/nmi.h``
 ===================== ================ ======================== ==========================================
-
-IrDA子系統也使用了大量的自己的魔術值，查看include/net/irda/irda.h來獲取他們完整的信息。