drm/ttm: fix removal of bo_count sysfs file

Only a zombie leftover from rebasing.

Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 3763d635de ("drm/ttm: add debugfs directory v2")
Reported-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209131756.24650-1-christian.koenig@amd.com

drivers/gpu/drm/ttm/ttm_device.c

@@ -49,8 +49,6 @@ static void ttm_global_release(void)
 	if (--ttm_glob_use_count > 0)
 		goto out;
 
-	kobject_del(&glob->kobj);
-	kobject_put(&glob->kobj);
 	ttm_mem_global_release(&ttm_mem_glob);
 	__free_page(glob->dummy_read_page);
 	memset(glob, 0, sizeof(*glob));

include/drm/ttm/ttm_device.h

@@ -55,7 +55,6 @@ extern struct ttm_global {
 	 * Constant after init.
 	 */
 
-	struct kobject kobj;
 	struct page *dummy_read_page;
 	spinlock_t lru_lock;