IVGCVSW-4246 Clean build end-to-end tests with -Wextra

Change-Id: Ia25f919e45a210e1e2d5d50b0c9098bf01d88013
Signed-off-by: Derek Lamberti <derek.lamberti@arm.com>
diff --git a/tests/InferenceTest.hpp b/tests/InferenceTest.hpp
index 7b7dcec..6423d1c 100644
--- a/tests/InferenceTest.hpp
+++ b/tests/InferenceTest.hpp
@@ -9,7 +9,7 @@
 #include <armnn/TypesUtils.hpp>
 #include "InferenceModel.hpp"
 
-
+#include <boost/core/ignore_unused.hpp>
 #include <boost/program_options.hpp>
 
 
@@ -91,8 +91,15 @@
 public:
     virtual ~IInferenceTestCaseProvider() {}
 
-    virtual void AddCommandLineOptions(boost::program_options::options_description& options) {};
-    virtual bool ProcessCommandLineOptions(const InferenceTestOptions &commonOptions) { return true; };
+    virtual void AddCommandLineOptions(boost::program_options::options_description& options)
+    {
+        boost::ignore_unused(options);
+    };
+    virtual bool ProcessCommandLineOptions(const InferenceTestOptions &commonOptions)
+    {
+        boost::ignore_unused(commonOptions);
+        return true;
+    };
     virtual std::unique_ptr<IInferenceTestCase> GetTestCase(unsigned int testCaseId) = 0;
     virtual bool OnInferenceTestFinished() { return true; };
 };