MyEventEmitter.removeListener.js

  removeListener(name, listenerToRemove) {
    if (!this._events[name]) {
      throw new Error(`Can't remove a listener. Event "${name}" doesn't exits.`);
    }

    const filterListeners = (listener) => listener !== listenerToRemove;

    this._events[name] = this._events[name].filter(filterListeners);
  }