[U-Boot] [U-Boot, 3/3] rockchip: remove SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR from defconfig

[Philipp Tomsich]

> Use default value 0x4000 for SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR instead
> of define a new one.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
>  configs/evb-rk3399_defconfig     | 1 -
>  configs/firefly-rk3399_defconfig | 1 -
>  2 files changed, 2 deletions(-)
> 

Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>