Fix polygon tool bug - #4805

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38044 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Removed unused class

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38045 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e