Remove early return in consteval_only_p

gcc/cp/reflect.cc

@@ -8087,12 +8087,6 @@ consteval_only_p (tree t)
   if (!flag_reflection)
     return false;
 
-  /* cp_walk_tree walks template arguments, but
-     std::initializer_list<std::meta::info>::size_type should be fine,
-     or a nullptr constant, and similar.  */
-  if (TREE_CODE (t) == INTEGER_CST)
-    return false;
-
   if (!TYPE_P (t))
     t = TREE_TYPE (t);