ZBrushCentral

Delete 3D Meshes from Tool Palette?

I’ve got a lot of 3D ZSphere experiments in the area with Simple Brush in Tool Palette and the same ones in 3D Meshes. How do I get rid of them?

http://www.zbrushcentral.com/showthread.php?171071-Remove-excess-tools-from-project-Answered&highlight=Remove+tools
http://www.zbrushcentral.com/showthread.php?176896-How-to-clean-the-excess-3D-Meshes-in-the-tool-palette-Answered&p=1011378&viewfull=1#post1011378