Remove unused variant option

Change-Id: I986d536ae567c3e671e8e2f618ca845f33fa9b12
diff --git a/src/static_schema.hpp b/src/static_schema.hpp
index 3e01e38..aab4383 100644
--- a/src/static_schema.hpp
+++ b/src/static_schema.hpp
@@ -43,7 +43,7 @@
 };
 }
 
-using NodeType = std::variant<yang::container, yang::list, yang::leaf, yang::leaflist, yang::module>;
+using NodeType = std::variant<yang::container, yang::list, yang::leaf, yang::leaflist>;
 
 struct NodeInfo {
     NodeType m_nodeType;