diff --git a/idl/idl_api.ysl2 b/idl/idl_api.ysl2
index f452f1a..a808735 100644
--- a/idl/idl_api.ysl2
+++ b/idl/idl_api.ysl2
@@ -84,18 +84,6 @@ def "func:idl_type_get_typekind_of_type" {
     }
 }
 
-def "func:idl_type_get_resolved_typekind" {
-    param "idltype";
-    const "idltypekind", "func:idl_type_get_typekind_of_type($idltype)";
-
-    choose {
-        when "$idltypekind = 'deftype'"
-            result "func:idl_type_get_typekind_of_type(func:idl_type_get_type_of_deftype($idltype))";
-        otherwise
-            result "$idltypekind";
-    }
-}
-
 def "func:idl_type_get_resolved_type" {
     param "idltype";
     const "idltypekind", "func:idl_type_get_typekind_of_type($idltype)";