code: public static void unregisterAtomListeners(IAtomContainer container) {
          for (IAtom atom : container.atoms())
              atom.removeListener(container);
      }
docs: A method to remove AtomListeners.
  AtomListeners are used to detect changes
  in Atom objects within this AtomContainer and to notifiy
  registered Listeners in the event of a change.
  If an object looses interest in such changes, it should
  unregister with this AtomContainer in order to improve
  performance of this class.