[C++] Fixed compiler warning wrt. unused parameter (JOYN-276)
[C++] Fixed compiler warning wrt. unused parameter (JOYN-276)

Change-Id: Id396fecbcea700403d84ca5796aa37955a1194ab

clive-jevons/joynr,bmwcarit/joynr,clive-jevons/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr