Deletion of Derro (Dungeons & Dragons)

Comment: There is really nothing out there in terms of reliable, secondary sources regarding the Derro.  Outside of primary sources, there are just a few handfuls of items that do little more than mention them as being a thing in D&D.  So, it fails the  and has no information that merits being preserved or merged
Stance: delete
Cited policy: Wikipedia:Notability (WP:GNG)