Revert "Revert "remove unused function declarations""
Revert "Revert "remove unused function declarations""

This reverts commit r1051795.
I need coffee this morning :s Sorry for stupidity... Will fix the real
problem in a moment.

shadeslayer/phonon-gstreamer,shadeslayer/phonon-gstreamer,KDE/phonon-xine,KDE/phonon-xine,KDE/phonon-mmf,KDE/phonon-directshow,KDE/phonon-directshow,KDE/phonon-xine,shadeslayer/phonon-gstreamer,KDE/phonon-waveout,KDE/phonon-quicktime,KDE/phonon-gstreamer,KDE/phonon-gstreamer