remove(model) {
    let match = this.models.find((m) => m.toString() === model.toString());
    if (match) {
      let i = this.models.indexOf(match);
      this.models.splice(i, 1);
    }

    return this;
  }
Removes a model from this collection.

    ```js
    posts.length; // 5

    let firstPost = posts.models[0];
    posts.remove(firstPost);
    posts.save();

    posts.length; // 4
    ```

    @method remove
    @param {Model} model
    @return this
    @public