drm: kill gem_free_object_unlocked driver callback

Not used by any current driver.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_gem.c

@@ -474,9 +474,7 @@ drm_gem_object_free_unlocked(struct kref *kref)
 	struct drm_gem_object *obj = (struct drm_gem_object *) kref;
 	struct drm_device *dev = obj->dev;
 
-	if (dev->driver->gem_free_object_unlocked != NULL)
-		dev->driver->gem_free_object_unlocked(obj);
-	else if (dev->driver->gem_free_object != NULL) {
+	if (dev->driver->gem_free_object != NULL) {
 		mutex_lock(&dev->struct_mutex);
 		dev->driver->gem_free_object(obj);
 		mutex_unlock(&dev->struct_mutex);

include/drm/drmP.h

@@ -802,7 +802,6 @@ struct drm_driver {
 	 */
 	int (*gem_init_object) (struct drm_gem_object *obj);
 	void (*gem_free_object) (struct drm_gem_object *obj);
-	void (*gem_free_object_unlocked) (struct drm_gem_object *obj);
 
 	/* vga arb irq handler */
 	void (*vgaarb_irq)(struct drm_device *dev, bool state);