Remove super passthrough.

app/assets/javascripts/blob/blob_ci_yaml.js.es6

@@ -2,10 +2,6 @@
 ((global) => {
 
   class BlobCiYamlSelector extends TemplateSelector {
-    constructor(...args) {
-      super(...args);
-    }
-
     requestFile(query) {
       return Api.gitlabCiYml(query.name, this.requestFileSuccess.bind(this));
     }

app/assets/javascripts/blob/blob_license_selectors.js.es6

 ((global) => {
-  class BlobLicenseSelectors() {
+  class BlobLicenseSelectors {
     constructor({ $dropdowns, editor }) {
       this.$dropdowns = $('.js-license-selector');
       this.editor = editor;