drm/rockchip: lvds: Remove include of drm_dp_helper.h

drm_dp_helper.h is not used by lvds driver
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240414120841.837661-1-andyshrk@163.com

drivers/gpu/drm/rockchip/rockchip_lvds.c

@@ -17,7 +17,6 @@
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
-#include <drm/display/drm_dp_helper.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_bridge_connector.h>