Fix linting error

Yukaii · Yukaii · commit 8d978cd2d022 · 2019-10-04T23:03:45.000+08:00
Signed-off-by: Yukai Huang &lt;yukaihuangtw@gmail.com&gt;
diff --git a/public/js/extra.js b/public/js/extra.js
@@ -1,5 +1,5 @@
 /* eslint-env browser, jquery */
-/* global moment, serverurl, plantumlServer, Viz */
+/* global moment, serverurl, plantumlServer */
 
 import Prism from 'prismjs'
 import hljs from 'highlight.js'
