Delete 
Edit > Delete (Delete Key)
 

Description:

      The Delete command (Edit > Delete) does its best to delete whatever geometry you have selected.  Different types of geometry can or can't be deleted depending on the geometry type and the way the geometry is attached to other geometry.  See below for details.


Notes:

- You can only delete vertices if they have either two edges or no edges attached.

- You can only delete edges if they have two faces or no faces attached.

- You can delete any face or object.