drm/exynos/ipp: remove unused field from exynos_drm_ipp_private

The patch removes unused event_list field from struct exynos_drm_ipp_private.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_drv.h

@@ -239,7 +239,6 @@ struct exynos_drm_g2d_private {
 
 struct exynos_drm_ipp_private {
 	struct device	*dev;
-	struct list_head	event_list;
 };
 
 struct drm_exynos_file_private {

drivers/gpu/drm/exynos/exynos_drm_ipp.c

@@ -534,7 +534,6 @@ int exynos_drm_ipp_set_property(struct drm_device *drm_dev, void *data,
 		INIT_LIST_HEAD(&c_node->mem_list[i]);
 
 	INIT_LIST_HEAD(&c_node->event_list);
-	list_splice_init(&priv->event_list, &c_node->event_list);
 	mutex_lock(&ippdrv->cmd_lock);
 	list_add_tail(&c_node->list, &ippdrv->cmd_list);
 	mutex_unlock(&ippdrv->cmd_lock);
@@ -1784,7 +1783,6 @@ static int ipp_subdrv_open(struct drm_device *drm_dev, struct device *dev,
 	priv->dev = dev;
 	file_priv->ipp_priv = priv;
 
-	INIT_LIST_HEAD(&priv->event_list);
 
 	DRM_DEBUG_KMS("done priv[0x%x]\n", (int)priv);