MIPS: Netlogic: Remove unused code

Remove unused functions and redundant comments from
arch/mips/include/asm/netlogic/haldefs.h

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/5029/


Acked-by: John Crispin <blogic@openwrt.org>