uboot-imx

armv8: ls1043a: remove redundant code in board files

gd->env_addr will be initialized in env_init() in
common/env_nowhere.c if CONFIG_ENV_IS_NOWHERE is defined.
So no need to do it again.

Signed-off-by: Gong Qianyu <Qianyu.Gong@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>