[U-Boot] [U-Boot, 1/2] arm: rockchip: make_fit_atf: remove unneeded imports

[Philipp Tomsich]

> From: Patrick Uiterwijk <patrick at puiterwijk.org>
> 
> These imports are entirely unused in the entire script.
> 
> Signed-off-by: Patrick Uiterwijk <patrick at puiterwijk.org>
> Signed-off-by: Peter Robinson <pbrobinson at gmail.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
>  arch/arm/mach-rockchip/make_fit_atf.py | 2 --
>  1 file changed, 2 deletions(-)
> 

Applied to u-boot-rockchip, thanks!