message: Removing unused variable
  Summary: `scope_classes` seems not to be used anywhere, seems safe to delete.
diff: @@ -512,7 +512,6 @@ class OptimizeEnums {
  */
  std::vector<DexClass*> collect_generated_classes() {
  std::vector<DexClass*> generated_classes;
  - std::unordered_set<DexClass*> scope_classes(m_scope.begin(), m_scope.end());
  // To avoid any cross store references, only accept generated classes
  // that are in the root store (same for the Enums they reference).
  