arm64: dts: rockchip: remove orphaned pinctrl-names from pinephone pro

The patch adding display support for the pinephone pro introduced two
regulators that contain pinctrl-names props but no pinctrl-assignments.

Looks like someone forgot the pinctrl settings, so remove the orphans
for now, until that changes.

Fixes: 3e987e1f ("arm64: dts: rockchip: Add internal display support to rk3399-pinephone-pro")
Cc: Martijn Braam <martijn@brixit.nl>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20241008203940.2573684-11-heiko@sntech.de


Signed-off-by: Heiko Stuebner <heiko@sntech.de>