IVGCVSW-3177 Refactor Floor reference workload

 * Renamed RefFloorFloat32Workload to RefFloorWorkload
   and updated references to reflect this change.
 * RefFloorWorkload now uses Decoders/Encoders and
   supports the use of multiple data types.
 * Deleted FloorTestImpl.hpp and moved its contents
   into LayerTests.hpp.

Change-Id: Ie079d05f2f6a578172f0fe3024f9607c030bce64
Signed-off-by: James Conroy <james.conroy@arm.com>
diff --git a/src/backends/reference/RefWorkloadFactory.cpp b/src/backends/reference/RefWorkloadFactory.cpp
index b829d54..500c14b 100644
--- a/src/backends/reference/RefWorkloadFactory.cpp
+++ b/src/backends/reference/RefWorkloadFactory.cpp
@@ -288,7 +288,7 @@
 std::unique_ptr<IWorkload> RefWorkloadFactory::CreateFloor(const FloorQueueDescriptor& descriptor,
                                                           const WorkloadInfo& info) const
 {
-    return MakeWorkload<RefFloorFloat32Workload, NullWorkload>(descriptor, info);
+    return std::make_unique<RefFloorWorkload>(descriptor, info);
 }
 
 std::unique_ptr<IWorkload> RefWorkloadFactory::CreateLstm(const LstmQueueDescriptor& descriptor,