Revert "ttm: Include the 'struct dev' when using the DMA API."

This reverts commit 5a893fc28f0393adb7c885a871b8c59e623fd528.

This causes a use after free in the ttm free alloc pages path,
when it tries to get the be after the be has been destroyed.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index df04661..96949b9 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -322,7 +322,7 @@
 	ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
 	dev_priv->active_master = &dev_priv->fbdev_master;
 
-	dev_priv->bdev.dev = dev->dev;
+
 	ret = ttm_bo_device_init(&dev_priv->bdev,
 				 dev_priv->bo_global_ref.ref.object,
 				 &vmw_bo_driver, VMWGFX_FILE_PAGE_OFFSET,