Unnecessary override of setUndefined()

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34639 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Don't transform undefined parts

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34640 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e