more axes labelling fixes (typos)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23361 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
unnecessary code removed

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23362 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e