MAINTAINERS: Remove non-existent VAS file

[Michael Ellerman]

On Thu, 2019-04-11 at 01:38:46 UTC, Sukadev Bhattiprolu wrote:
> The file arch/powerpc/include/uapi/asm/vas.h was considered but
> never merged and should be removed from the MAINTAINERS file.
> 
> While here, add missing email address.
> 
> Reported-by: Joe Perches <joe at perches.com>
> Signed-off-by: Sukadev Bhattiprolu <sukadev at linux.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/679d03f26a686dd609afd94fd7caad7d

cheers