Remove Duplicate Keys in Environment Table

A bad merge accidentally duplicated the `computed` property on the
component.

app/assets/javascripts/environments/components/environments_table.vue

@@ -70,15 +70,6 @@ export default {
       );
     },
   },
-  computed: {
-    sortedEnvironments() {
-      return this.sortEnvironments(this.environments).map(env =>
-        this.shouldRenderFolderContent(env)
-          ? { ...env, children: this.sortEnvironments(env.children) }
-          : env,
-      );
-    },
-  },
   methods: {
     folderUrl(model) {
       return `${window.location.pathname}/folders/${model.folderName}`;