ggpLayerAxesClean.RdRemoves axis text, -ticks and -titles (labs) from the plot.
ggpLayerAxesClean(..., object = NULL)ggpLayer*()-functions return lists of ggproto objects
that can be added to ggplots via the + operator. In most of the cases
they are supposed to be added to plots created with the plotSurface*()
family.