code: function(model) {
      if (model.isNew())
        return false
      this.localStorage().removeItem(this.name+"-"+model.id);
      this.records = _.reject(this.records, function(id){
        return id === model.id.toString();
      });
      this.save();
      return model;
    }
docs: Delete a model from `this.data`, returning it.