linux-imx

s390: remove g5 elf platform support

Remove dead code, since this could only happen on a 31 bit machine
where the kernel wouldn't IPL.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>