message: Removing on_class
  Summary:
  It is unused, and also equivalent to the combination of two other combinators:
  ```
  m::on_class<Member>("...") == m::member_of<Member>(m::named<DexType>("..."))
  ```
diff: @@ -367,13 +367,6 @@ inline auto is_assignable_to(const DexType* parent) {
  });
  }
  -/** Match methods that are bound to the given class. */
  -template <typename T>
  -inline auto on_class(const char* type) {
  - return matcher<T>(
  - [type](const T* t) { return t->get_class()->get_name()->str() == type; });
  -}
  -
  /** Match members and check predicate on their type */
  template <typename Member, typename P>
  inline auto member_of(match_t<DexType, P> p) {
  