removeFeature(feature) {
    if (!feature) {
      return;
    }
    const removed = this.removeFeatureInternal(feature);
    if (removed) {
      this.changed();
    }
  }
Remove a single feature from the source. If you want to batch remove
features, use the {@link module:ol/source/Vector~VectorSource#removeFeatures #removeFeatures()} method
instead.
@param {FeatureType} feature Feature to remove.
@api