CatalogContents: remove unused code

cateditor/src/components/CatalogContents.vue

@@ -236,28 +236,7 @@ export default {
       arrayMove.mutate(mats, fromIndex, toIndex)
       this.setModelMaterials({ model: this.selectedModel, materials: mats })
     },
-    /*
-       groupByModel: function(materials) {
-       let models = []
 
-       for (let mat of materials) {
-       let model = models.length > 0 ? models[models.length - 1] : null
-
-       if (model === null || model.id !== mat.model) {
-       // new model
-       model = { id: mat.model,
-       name: mat.name,
-       materials: [mat.id] }
-       models.push(model)
-       } else {
-       // add to existing
-       model.materials.push(mat.id)
-       }
-       }
-
-       return models
-       },
-     */
     ...mapActions([
       'reorderSection',
       'setSectionPages',