COMPMID-510: Cleaned up Warp tests.

Change-Id: I8e3fece5b786b5529e8f1320fb5794e43756ec4a
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/89274
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/tests/validation/fixtures/WarpPerspectiveFixture.h b/tests/validation/fixtures/WarpPerspectiveFixture.h
index a99ee4e..c77efbd 100644
--- a/tests/validation/fixtures/WarpPerspectiveFixture.h
+++ b/tests/validation/fixtures/WarpPerspectiveFixture.h
@@ -62,7 +62,7 @@
 
         // Create the matrix
         std::array<float, 9> matrix = { { 0 } };
-        fill_warp_matrix<9>(matrix, 3, 3);
+        fill_warp_matrix<9>(matrix);
 
         _target    = compute_target(input_shape, vmask_shape, matrix.data(), policy, border_mode, constant_border_value, data_type);
         _reference = compute_reference(input_shape, vmask_shape, matrix.data(), policy, border_mode, constant_border_value, data_type);