Ticket #4049: these .getX() and .getY() are not used

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31542 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
ImageDialog Design changes

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31543 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4049: refactoring getX() in DockGlassPaneW

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31544 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e