Removed unused labels and legend properties on CompositeOverlay
Removed unused labels and legend properties on CompositeOverlay

vascotenner/holoviews,vascotenner/holoviews,mjabri/holoviews,basnijholt/holoviews,mjabri/holoviews,basnijholt/holoviews,ioam/holoviews,ioam/holoviews,ioam/holoviews,mjabri/holoviews,vascotenner/holoviews,basnijholt/holoviews