In RM7, you can initiate the deletion of a person in Pedigree View, Family View, Descendant View, or People View by using the Delete key or by using a right click with the Delete option.
In RM9, you can initiate the deletion of a person in Pedigree View and Family View by using the Delete key or by using a right click with the Delete option. The Delete key is not supported in Descendant View and People List view and the only way to delete a person in those views is by using a right click with the Delete option.
It is requested that this lack of Delete key support in Descendant View and People List view be treated as a bug and that the bug be fixed. I suppose the behavior might be considered to be working as designed. But it makes no sense not to support the Delete key to initiate the deletion of a person in views that already support a Delete with a right click.