diff --git a/go/types.h b/go/types.h
index ef81589..ccd1268 100644
--- a/go/types.h
+++ b/go/types.h
@@ -1426,8 +1426,6 @@
   // The GC symbol for this type.  This starts out as NULL and
   // is filled in as needed.
   Bvariable* gc_symbol_var_;
-  // Whether this type can appear in the heap.
-  bool in_heap_;
 };
 
 // Type hash table operations, treating aliases as identical to the