dropRecognizeWith(otherRecognizer) {
    if (invokeArrayArg(otherRecognizer, 'dropRecognizeWith', this)) {
      return this;
    }

    otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
    delete this.simultaneous[otherRecognizer.id];
    return this;
  }
@private
drop the simultaneous link. it doesnt remove the link on the other recognizer.
@param {Recognizer} otherRecognizer
@returns {Recognizer} this