IVGCVSW-4482 Remove boost::ignore_unused

!referencetests:229377

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: Ia9b360b4a057fe7bbce5b268092627c09a0dba82
diff --git a/src/backends/backendsCommon/test/layerTests/DequantizeTestImpl.cpp b/src/backends/backendsCommon/test/layerTests/DequantizeTestImpl.cpp
index 91d56bb..0a4bdb8 100644
--- a/src/backends/backendsCommon/test/layerTests/DequantizeTestImpl.cpp
+++ b/src/backends/backendsCommon/test/layerTests/DequantizeTestImpl.cpp
@@ -26,7 +26,7 @@
         const std::vector<T1>& expectedOutputData,
         armnn::DequantizeQueueDescriptor descriptor)
 {
-    boost::ignore_unused(memoryManager);
+    IgnoreUnused(memoryManager);
     boost::multi_array<T, Dim> input = MakeTensor<T, Dim>(inputTensorInfo, inputData);
 
     LayerTestResult<T1, Dim> ret(outputTensorInfo);