[PyMOL] isosurface removal

[Andrew V. <dru...@ya...>]

Dear PyMol,  I am doing now one of the Open3D QSAR tutorials and have the problem that I need to remove the colored surfaces.
http://open3dqsar.sourceforge.net/?Tutorials
I can't find how to do it. Can you please recommend me how can I remove the colored isosurface (isosurf command)?

Best regards,
Andrey