[PATCH] remove unused code

[Petr Vorel]

Hi there,

another patch removing unused code. Actually I need an advice this time. Is
method oox::core::XmlFilterBase::getChartConverter() really unused / unwanted?
As it's used in Shape::finalizeXShape (oox/source/drawingml/shape.cxx). So feel
free to drop it if it's not valid.

Btw can we really rely on the tool which generates unusedcode.easy?

Regards,
Petr