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/NetworkExecutionUtils/NetworkExecutionUtils.hpp b/tests/NetworkExecutionUtils/NetworkExecutionUtils.hpp
index 279bf30..f9e9b14 100644
--- a/tests/NetworkExecutionUtils/NetworkExecutionUtils.hpp
+++ b/tests/NetworkExecutionUtils/NetworkExecutionUtils.hpp
@@ -732,6 +732,7 @@
                const bool enableProfiling, const bool enableFp16TurboMode, const double& thresholdTime,
                const bool printIntermediate, bool enableLayerDetails = false, bool parseUnuspported = false)
 {
+    boost::ignore_unused(runtime);
     std::string modelFormat;
     std::string modelPath;
     std::string inputNames;