test(realm): remove unwanted arg from realm API

Remove unwanted arg plat_mem_pool_size
from host_create_realm_payload and
host_create_activate_realm_payload API

Change-Id: Id92d77d2ed8944c0e038cb62459247f0d17e516c
Signed-off-by: Shruti Gupta <shruti.gupta@arm.com>
6 files changed