chore(bl1): remove redundant bl1_arch_next_el_setup

bl1_arch_next_el_setup has no references anywhere in TF-A. Remove it as
it is redundant

Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: Ice2997f33c318390883347acdd03dc6755f87ea5
3 files changed