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/LstmTestImpl.cpp b/src/backends/backendsCommon/test/layerTests/LstmTestImpl.cpp
index b12df8a..50ef5c9 100644
--- a/src/backends/backendsCommon/test/layerTests/LstmTestImpl.cpp
+++ b/src/backends/backendsCommon/test/layerTests/LstmTestImpl.cpp
@@ -142,7 +142,7 @@
         int32_t qOffset = 0,
         armnn::DataType constantDataType = armnn::DataType::Float32)
 {
-    boost::ignore_unused(memoryManager);
+    IgnoreUnused(memoryManager);
     unsigned int batchSize = boost::numeric_cast<unsigned int>(input.shape()[0]);
     unsigned int inputSize = boost::numeric_cast<unsigned int>(input.shape()[1]);
     unsigned int outputSize = boost::numeric_cast<unsigned int>(outputExpected.shape()[1]);
@@ -345,7 +345,7 @@
                                                   int32_t qOffset = 0,
                                                   armnn::DataType constantDataType = armnn::DataType::Float32)
 {
-    boost::ignore_unused(memoryManager);
+    IgnoreUnused(memoryManager);
     unsigned int batchSize = 2;
     unsigned int outputSize = 16;
     unsigned int inputSize = 5;
@@ -1060,7 +1060,7 @@
         int32_t qOffset = 0,
         armnn::DataType constantDataType = armnn::DataType::Float32)
 {
-    boost::ignore_unused(memoryManager);
+    IgnoreUnused(memoryManager);
     bool cifgEnabled = true;
     bool peepholeEnabled = true;
     bool projectionEnabled = false;
@@ -1285,7 +1285,7 @@
                                                   int32_t qOffset = 0,
                                                   armnn::DataType constantDataType = armnn::DataType::Float32)
 {
-    boost::ignore_unused(memoryManager);
+    IgnoreUnused(memoryManager);
     unsigned int batchSize = 2;
     unsigned int outputSize = 3;
     unsigned int inputSize = 5;
@@ -1552,7 +1552,7 @@
     const boost::multi_array<uint8_t, 2>& input,
     const boost::multi_array<uint8_t, 2>& outputExpected)
 {
-    boost::ignore_unused(memoryManager);
+    IgnoreUnused(memoryManager);
     auto numBatches = boost::numeric_cast<unsigned int>(input.shape()[0]);
     auto inputSize = boost::numeric_cast<unsigned int>(input.shape()[1]);
     auto outputSize = boost::numeric_cast<unsigned int>(outputExpected.shape()[1]);