drm/nouveau: Remove unused variable

Trivial removal of an unused variable. Not sure how it snuck by me and
build bots in the 7c99616.

Fixes: 7c99616 ("drm: Remove drm_mode_config::fb_base")
Reported-by: Stephen Rothwell <[email protected]>
Cc: Laurent Pinchart <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Christian König <[email protected]>
Cc: Ben Skeggs <[email protected]>
Cc: Karol Herbst <[email protected]>
Cc: Lyude Paul <[email protected]>
Reviewed-by: Lyude Paul <[email protected]>
Signed-off-by: Zack Rusin <[email protected]>
Signed-off-by: Lyude Paul <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Dave Airlie <[email protected]>

Author: zackr

drivers/gpu/drm/nouveau/nouveau_display.c

@@ -659,7 +659,6 @@ int
 nouveau_display_create(struct drm_device *dev)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
-	struct nvkm_device *device = nvxx_device(&drm->client.device);
 	struct nouveau_display *disp;
 	int ret;