Fix broken popup warning about changes in event edition

Well, partially at least

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/main.ts

@@ -1,5 +1,3 @@
-// The Vue build version to load with the `import` command
-// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
 import Vue from "vue";
 import Buefy from "buefy";
 import Component from "vue-class-component";