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/MockBackend.cpp b/src/backends/backendsCommon/test/MockBackend.cpp
index b2388cf..8d40117 100644
--- a/src/backends/backendsCommon/test/MockBackend.cpp
+++ b/src/backends/backendsCommon/test/MockBackend.cpp
@@ -108,7 +108,7 @@
 IBackendInternal::IBackendProfilingContextPtr MockBackend::CreateBackendProfilingContext(
     const IRuntime::CreationOptions& options, IBackendProfilingPtr& backendProfiling)
 {
-    boost::ignore_unused(options);
+    IgnoreUnused(options);
     std::shared_ptr<armnn::MockBackendProfilingContext> context =
         std::make_shared<MockBackendProfilingContext>(backendProfiling);
     MockBackendProfilingService::Instance().SetProfilingContextPtr(context);