public boolean removeCinematicEvent(KeyFrame keyFrame, CinematicEvent cinematicEvent) {
        cinematicEvent.dispose();
        boolean ret = keyFrame.cinematicEvents.remove(cinematicEvent);
        cinematicEvents.remove(cinematicEvent);
        if (keyFrame.isEmpty()) {
            timeLine.removeKeyFrame(keyFrame.getIndex());
        }
        return ret;
    }
removes the first occurrence found of the given cinematicEvent for the
given keyFrame

@param keyFrame the keyFrame returned by the addCinematicEvent method.
@param cinematicEvent the cinematicEvent to remove
@return true if the element has been removed
jme3-core/src/main/java/com/jme3/cinematic/Cinematic.java