IVGCVSW-1946: Remove armnn/src from the include paths

Change-Id: I663a0a0fccb43ee960ec070121a59df9db0bb04e
diff --git a/src/backends/reference/test/RefJsonPrinterTests.cpp b/src/backends/reference/test/RefJsonPrinterTests.cpp
index ee668a2..4d48443 100644
--- a/src/backends/reference/test/RefJsonPrinterTests.cpp
+++ b/src/backends/reference/test/RefJsonPrinterTests.cpp
@@ -5,7 +5,7 @@
 
 #include <armnn/BackendId.hpp>
 
-#include <backends/test/JsonPrinterTestImpl.hpp>
+#include <backendsCommon/test/JsonPrinterTestImpl.hpp>
 
 #include <boost/test/unit_test.hpp>