media: platform: mtk-mdp3: Remove unused mdp_get_plat_device

mdp_get_plat_device() was added in 2022 but has remained unused.

Remove it.

Fixes: 61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver")
Signed-off-by: Dr. David Alan Gilbert <[e-mail]>
Reviewed-by: Nicolas Dufresne <[e-mail]>
Signed-off-by: Nicolas Dufresne <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h

···
 #include <linux/soc/mediatek/mtk-cmdq.h>
 #include "mtk-img-ipi.h"
 
-struct platform_device *mdp_get_plat_device(struct platform_device *pdev);
-
 struct mdp_cmdq_param {
 	struct img_config *config;
 	struct img_ipi_frameparam *param;

drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c

···
 	return mdp_pdev;
 }
 
-struct platform_device *mdp_get_plat_device(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct device_node *mdp_node;
-	struct platform_device *mdp_pdev;
-
-	mdp_node = of_parse_phandle(dev->of_node, MDP_PHANDLE_NAME, 0);
-	if (!mdp_node) {
-		dev_err(dev, "can't get node %s\n", MDP_PHANDLE_NAME);
-		return NULL;
-	}
-
-	mdp_pdev = of_find_device_by_node(mdp_node);
-	of_node_put(mdp_node);
-
-	return mdp_pdev;
-}
-EXPORT_SYMBOL_GPL(mdp_get_plat_device);
-
 int mdp_vpu_get_locked(struct mdp_dev *mdp)
 {
 	int ret = 0;