Remove unused

aleksis/apps/alsijil/frontend/components/coursebook/Coursebook.vue

@@ -152,7 +152,6 @@ export default {
     return {
       gqlQuery: documentationsForCoursebook,
       lastQuery: null,
-      visible: [],
       dateStart: "",
       dateEnd: "",
       // Placeholder values while query isn't completed yet
@@ -215,12 +214,7 @@ export default {
         this.$router.replace({ hash: DateTime.now().toISODate() })
       } 
 
-      // if (date) {
-      //   this.$router.replace({ hash: date })
-      // }
       const date = DateTime.fromISO(this.$route.hash.substring(1));
-      // Reset visible
-      this.visible = [];
       this.dateStart = date.minus({ days: 3 }).toISODate();
       this.dateEnd = date.plus({ days: 4 }).toISODate();
     },