drm/nvc0/gr: no need to store context in graph_fini()

PFIFO kickoff should have handled this for us.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvc0_graph.c b/drivers/gpu/drm/nouveau/nvc0_graph.c
index dcb8d9a..c4b65fa 100644
--- a/drivers/gpu/drm/nouveau/nvc0_graph.c
+++ b/drivers/gpu/drm/nouveau/nvc0_graph.c
@@ -250,12 +250,6 @@
 static int
 nvc0_graph_fini(struct drm_device *dev, int engine)
 {
-	u32 inst = nv_rd32(dev, 0x409b00);
-	if (inst & 0x80000000) {
-		inst &= 0x0fffffff;
-		nvc0_graph_unload_context_to(dev, (u64)inst << 12);
-	}
-
 	return 0;
 }