fix: do not nullify taxon photo based on lack of id

Author: pleary

lib/models/taxon.js

@@ -206,9 +206,6 @@ const Taxon = class Taxon extends Model {
       this.default_photo.url = util.fixHttps( this.default_photo.url );
       this.default_photo.medium_url = util.fixHttps( this.default_photo.medium_url );
       this.default_photo.square_url = util.fixHttps( this.default_photo.square_url );
-      if ( !this.default_photo.id ) {
-        this.default_photo = null;
-      }
     }
     if ( this.taxon_photos ) {
       _.each( this.taxon_photos, tp => {
@@ -523,7 +520,6 @@ const Taxon = class Taxon extends Model {
   static async preloadIntoTaxonPhotos( taxa, options ) {
     options = options || { };
     const prepareTaxon = t => t.prepareForResponse( options.localeOpts );
-    // const taxonPhotos = _.flatten( _.map( taxa, t => t.taxon_photos ) );
     _.each( taxa, taxon => {
       _.each( taxon.taxon_photos, taxonPhoto => {
         if ( taxonPhoto.taxon_id === taxon.id ) {