Migrate subgroups suite to the new test registration framework (#2313)

Contributes to #2181.

Signed-off-by: Ahmed Hesham <ahmed.hesham@arm.com>

test_conformance/subgroups/test_subgroup_clustered_reduce.cpp

@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-#include "procs.h"
 #include "subhelpers.h"
 #include "subgroup_common_templates.h"
 #include "harness/typeWrappers.h"
@@ -181,10 +180,7 @@ int run_cluster_logical_and_or_xor_for_type(RunTestForType rft)
 }
 }
 
-int test_subgroup_functions_clustered_reduce(cl_device_id device,
-                                             cl_context context,
-                                             cl_command_queue queue,
-                                             int num_elements)
+REGISTER_TEST(subgroup_functions_clustered_reduce)
 {
     if (!is_extension_available(device, "cl_khr_subgroup_clustered_reduce"))
     {