[dts][PATCH V1] test_plan/power_empty_poll: remove power_empty_poll test_plan

[Pattan, Reshma]

> -----Original Message-----
> From: Kearney, Tadhg <tadhg.kearney at intel.com>
> The experimental empty poll API has been removed from the power
> management library in DPDK 22.03. Removing test_plan, power_empty_poll
> test has already been removed.
> 
> Signed-off-by: Tadhg Kearney <tadhg.kearney at intel.com>
> ---
>  test_plans/index.rst                      |   1 -
>  test_plans/power_empty_poll_test_plan.rst | 115 ----------------------
>  2 files changed, 116 deletions(-)
>  delete mode 100644 test_plans/power_empty_poll_test_plan.rst
> 

Do you also need to remove power_empty_poll.cfg from the  /conf/  folder ?