[PATCH] arc: configs: remove no longer needed config option

[Vineet.Gupta1@xxxxxxxxxxxx (Vineet Gupta)]

On 06/26/2018 08:29 AM, Anders Roxell wrote:
> Since commit eedf265aa003 ("devpts: Make each mount of devpts an
> independent filesystem.") CONFIG_DEVPTS_MULTIPLE_INSTANCES isn't needed
> in the defconfig anymore.
>
> Signed-off-by: Anders Roxell <anders.roxell at linaro.org>

Thx,

Added to for-curr !

-Vineet