drm/nouveau: remove abi16->handles

Hasn't been needed since 2015...
Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240726043828.58966-11-bskeggs@nvidia.com

drivers/gpu/drm/nouveau/nouveau_abi16.h

@@ -32,7 +32,6 @@ struct nouveau_abi16_chan {
 struct nouveau_abi16 {
 	struct nouveau_cli *cli;
 	struct list_head channels;
-	u64 handles;
 	struct list_head objects;
 };