COMPMID-1451: Cleanup reference implementation

Change-Id: Ibadc86a5b9eb8bdd670553256b83a0309cbed37f
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/148317
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: bsgcomp <bsgcomp@arm.com>
diff --git a/tests/validation/reference/NormalizationLayer.h b/tests/validation/reference/NormalizationLayer.h
index 3448baf..81b95cc 100644
--- a/tests/validation/reference/NormalizationLayer.h
+++ b/tests/validation/reference/NormalizationLayer.h
@@ -35,7 +35,7 @@
 {
 namespace reference
 {
-template <typename T, typename std::enable_if<is_floating_point<T>::value, int>::type = 0>
+template <typename T>
 SimpleTensor<T> normalization_layer(const SimpleTensor<T> &src, NormalizationLayerInfo info);
 
 } // namespace reference