drm/nouveau: Remove unecessary dma_fence_ops

dma_fence_default_wait is the default now.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: nouveau@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180704092909.6599-4-daniel.vetter@ffwll.ch

drivers/gpu/drm/nouveau/nouveau_fence.c

@@ -526,6 +526,5 @@ static const struct dma_fence_ops nouveau_fence_ops_uevent = {
 	.get_timeline_name = nouveau_fence_get_timeline_name,
 	.enable_signaling = nouveau_fence_enable_signaling,
 	.signaled = nouveau_fence_is_signaled,
-	.wait = dma_fence_default_wait,
 	.release = nouveau_fence_release
 };