Question How to import rig without mesh?

I need to import a skeleton, and I would like to import one without any skeletal mesh data, just rig and bone information.

How can I do this in unity?

 

You can delete the mesh in your creation program (Maya, Blender) and simply export the skeleton as an fbx. That is they way I do all of my clips. I bake the animation and export just the skeleton without any meshes or other nodes.