drm/rockchip: vop2: Remove AR30 and AB30 format support

The Alpha blending for 30 bit RGB/BGR are not
functioning properly for rk3568/rk3588, so remove
it from the format list.

Fixes: bfd8a5c2 ("drm/rockchip: vop2: Add more supported 10bit formats")
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240304100952.3592984-1-andyshrk@163.com