remove debugging

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33213 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Polygons: move area & centroid calculations to the algos

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33214 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e