Remove unused variable forgotten to remove
Remove unused variable forgotten to remove

The last use was removed in 24c61af (gpu.c: group_array_references:
maintain proper groups during construction, Tue Dec 25 19:52:11 2012
+0100).

Signed-off-by: Tobias Grosser <059b8b880f8441509ec8a65b50b4c6ae74ebea76@grosser.es>
Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

nicolasvasilache/ppcg,Meinersbur/ppcg,nicolasvasilache/ppcg,Meinersbur/ppcg