drm/msm: remove unused plane_property field from msm_drm_private

Remove unused field plane_property from struct msm_drm_private. Also
drop the enum msm_mdp_plane_property which also becomes unused.

Fixes: 7d36db0b ("drm/msm/mdp5: switch to standard zpos property")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/480939/
Link: https://lore.kernel.org/r/20220406100556.479706-1-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/msm_drv.h

@@ -50,13 +50,6 @@ struct msm_disp_state;
 
 #define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
 
-enum msm_mdp_plane_property {
-	PLANE_PROP_ZPOS,
-	PLANE_PROP_ALPHA,
-	PLANE_PROP_PREMULTIPLIED,
-	PLANE_PROP_MAX_NUM
-};
-
 enum msm_dp_controller {
 	MSM_DP_CONTROLLER_0,
 	MSM_DP_CONTROLLER_1,
@@ -187,9 +180,6 @@ struct msm_drm_private {
 	unsigned int num_bridges;
 	struct drm_bridge *bridges[MAX_BRIDGES];
 
-	/* Properties */
-	struct drm_property *plane_property[PLANE_PROP_MAX_NUM];
-
 	/* VRAM carveout, used when no IOMMU: */
 	struct {
 		unsigned long size;