Documentation: devices.txt: Remove ttySIOC*

IOC3 serial driver was removed, remove associated devices
from documentation.

Fixes: 9c860e4 ("tty/serial: remove the ioc3_serial driver")
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/f13b5c64f8cb6d8f2357d7be14397676b27ac2a2.1691992627.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: chleroy

Documentation/admin-guide/devices.txt

@@ -2694,9 +2694,6 @@
 		 49 = /dev/ttyCPM5		PPC CPM (SCC or SMC) - port 3
 		 82 = /dev/ttyVR0		NEC VR4100 series SIU
 		 83 = /dev/ttyVR1		NEC VR4100 series DSIU
-		 116 = /dev/ttySIOC0		Altix ioc3 serial card
-		    ...
-		 147 = /dev/ttySIOC31		Altix ioc3 serial card
 		 148 = /dev/ttyPSC0		PPC PSC - port 0
 		    ...
 		 153 = /dev/ttyPSC5		PPC PSC - port 5