drm/nouveau/device: Remove duplicate inclusion of core/device.h

core/device.h was included twice.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/core/subdev/device/base.c

@@ -25,7 +25,6 @@
 #include <core/object.h>
 #include <core/device.h>
 #include <core/client.h>
-#include <core/device.h>
 #include <core/option.h>
 
 #include <core/class.h>