IVGCVSW-2982 Refactor reference Activation workload

Change-Id: Ia3b9a56787cc68822a3c1635de82e03ecc0aae27
Signed-off-by: Nattapat Chaimanowong <nattapat.chaimanowong@arm.com>
diff --git a/src/backends/reference/workloads/RefWorkloads.hpp b/src/backends/reference/workloads/RefWorkloads.hpp
index a1b5847..7871a1b 100644
--- a/src/backends/reference/workloads/RefWorkloads.hpp
+++ b/src/backends/reference/workloads/RefWorkloads.hpp
@@ -13,7 +13,7 @@
 #include "RefSplitterUint8Workload.hpp"
 #include "RefResizeBilinearUint8Workload.hpp"
 #include "RefL2NormalizationFloat32Workload.hpp"
-#include "RefActivationUint8Workload.hpp"
+#include "RefActivationWorkload.hpp"
 #include "RefPooling2dFloat32Workload.hpp"
 #include "RefWorkloadUtils.hpp"
 #include "RefMergerUint8Workload.hpp"
@@ -47,7 +47,6 @@
 #include "RefSpaceToBatchNdWorkload.hpp"
 #include "RefSplitterFloat32Workload.hpp"
 #include "RefStridedSliceWorkload.hpp"
-#include "RefActivationFloat32Workload.hpp"
 #include "RefConvolution2dFloat32Workload.hpp"
 #include "Pooling2d.hpp"
 #include "RefFakeQuantizationFloat32Workload.hpp"
@@ -64,4 +63,4 @@
 #include "RefRsqrtFloat32Workload.hpp"
 #include "RefDequantizeWorkload.hpp"
 
-#include "RefQuantizeWorkload.hpp"
\ No newline at end of file
+#include "RefQuantizeWorkload.hpp"