Remove redundant check
Remove redundant check

Attribute value group can never be empty, and attribute group names will always have at least one value.

shaneataylor/dita-ot,infotexture/dita-ot,shaneataylor/dita-ot,shaneataylor/dita-ot,shaneataylor/dita-ot,drmacro/dita-ot,dita-ot/dita-ot,drmacro/dita-ot,drmacro/dita-ot,infotexture/dita-ot,drmacro/dita-ot,infotexture/dita-ot,infotexture/dita-ot,infotexture/dita-ot,shaneataylor/dita-ot,dita-ot/dita-ot,dita-ot/dita-ot,dita-ot/dita-ot,dita-ot/dita-ot,drmacro/dita-ot