drm/msm/dpu: drop duplicate drm formats from wb2_formats arrays

drm/msm/dpu: drop duplicate drm formats from wb2_formats arrays

There are duplicate items in wb2_formats_rgb and wb2_formats_rgb_yuv,
which cause weston assertions failed.

weston: libweston/drm-formats.c:131: weston_drm_format_array_add_format:
Assertion `!weston_drm_format_array_find_format(formats, format)' failed.

Signed-off-by: Junhao Xie <bigfoot@classfun.cn>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Fixes: 8c16b988ba2d ("drm/msm/dpu: introduce separate wb2_format arrays for rgb and yuv")
Fixes: 53324b99bd7b ("drm/msm/dpu: add writeback blocks to the sm8250 DPU catalog")
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/596847/
Link: https://lore.kernel.org/r/20240524150128.1878297-2-bigfoot@classfun.cn
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>