[U-Boot] [U-Boot, v2, 18/42] Kconfig: sandbox: Drop CONFIG_CMD_SANDBOX option

[Philipp Tomsich]

> This is no-longer used. Drop it.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
> ---
> 
> Changes in v2: None
> 
>  README                       | 1 -
>  include/config_cmd_all.h     | 1 -
>  include/configs/sandbox.h    | 2 --
>  scripts/config_whitelist.txt | 1 -
>  4 files changed, 5 deletions(-)
> 

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