Remove redundant code from bl1_plat_helpers.S
Remove redundant code from bl1_plat_helpers.S

Remove redundant code in plat_secondary_cold_boot_setup() in
plat/fvp/aarch64/bl1_plat_helpers.S.

Fixes ARM-software/tf-issues#136

Change-Id: I98c0a46d95cfea33125e34e609c83dc2c97cd86e

idl3r/arm-trusted-firmware,longsleep/arm-trusted-firmware-pine64,ljerry/arm-trusted-firmware,jforissier/arm-trusted-firmware,davwan01/arm-trusted-firmware,mtk09422/arm-trusted-firmware,vikramkanigiri/arm-trusted-firmware,sbranden/arm-trusted-firmware,vchong/arm-trusted-firmware,jforissier/arm-trusted-firmware,davwan01/arm-trusted-firmware,jcastillo-arm/arm-trusted-firmware,achingupta/arm-trusted-firmware,sandrine-bailleux-arm/arm-trusted-firmware,sandrine-bailleux-arm/arm-trusted-firmware,longsleep/arm-trusted-firmware-pine64,athoelke/arm-trusted-firmware,vchong/arm-trusted-firmware,hzhuang1/arm-trusted-firmware,robixnai/arm-trusted-firmware,96boards/arm-trusted-firmware,jcastillo-arm/arm-trusted-firmware,96boards/arm-trusted-firmware,sandrine-bailleux/arm-trusted-firmware,vikramkanigiri/arm-trusted-firmware,sbranden/arm-trusted-firmware,sandrine-bailleux/arm-trusted-firmware,achingupta/arm-trusted-firmware,idl3r/arm-trusted-firmware,hzhuang1/arm-trusted-firmware,athoelke/arm-trusted-firmware,yatharth-arm/arm-trusted-firmware,lsigithub/arm-trusted-firmware_public,Leo-Yan/arm-trusted-firmware,yatharth-arm/arm-trusted-firmware,lsigithub/arm-trusted-firmware_public,Leo-Yan/arm-trusted-firmware,robixnai/arm-trusted-firmware,mtk09422/arm-trusted-firmware,ljerry/arm-trusted-firmware