Remove unused variable

dashboard/src/components/BackupScheduleDialog.vue

@@ -33,11 +33,6 @@ const cronDays = [
 // generates 24h time sets (instead of american 12h) to avoid having to translate everything to locales eg. 12:00
 const cronHours = Array.from({ length: 24 }).map(function (v, i) { return { id: i, name: (i < 10 ? '0' : '') + i + ':00' }; });
 
-const policy = ref({
-  schedule: '',
-  retention: ''
-});
-
 const id = ref('');
 const busy = ref(false);
 const formError = ref('');