Revert "ARM: dts: rockchip: set PWM delay backlight settings for Minnie"

This reverts commit 288ceb85.

The commit assumes that the minnie panel is a AUO B101EAN01.1 (LVDS
interface), however it is a AUO B101EAN01.8 (eDP interface). The eDP
panel doesn't need the 200 ms delay.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-veyron-minnie.dts

@@ -106,8 +106,6 @@ &backlight {
 			240 241 242 243 244 245 246 247
 			248 249 250 251 252 253 254 255>;
 	power-supply = <&backlight_regulator>;
-	post-pwm-on-delay-ms = <200>;
-	pwm-off-delay-ms = <200>;
 };
 
 &i2c_tunnel {