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/TfLiteInceptionV4Quantized-Armnn/TfLiteInceptionV4Quantized-Armnn.cpp b/tests/TfLiteInceptionV4Quantized-Armnn/TfLiteInceptionV4Quantized-Armnn.cpp
index b0af830..169ecb0 100644
--- a/tests/TfLiteInceptionV4Quantized-Armnn/TfLiteInceptionV4Quantized-Armnn.cpp
+++ b/tests/TfLiteInceptionV4Quantized-Armnn/TfLiteInceptionV4Quantized-Armnn.cpp
@@ -37,7 +37,7 @@
                      "input",                             // input tensor name
                      "InceptionV4/Logits/Predictions",    // output tensor name
                      { 0, 1, 2 },                         // test images to test with as above
-                     [&imageSet](const char* dataDir, const ModelType & model) {
+                     [&imageSet](const char* dataDir, const ModelType &) {
                          // we need to get the input quantization parameters from
                          // the parsed model
                          return DatabaseType(