Eslint fix

src/privileged/introductionNotificationBar/api.js

@@ -8,9 +8,8 @@ ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
 ChromeUtils.import("resource://gre/modules/ExtensionCommon.jsm");
 ChromeUtils.import("resource://gre/modules/ExtensionUtils.jsm");
 
-// eslint-disable-next-line no-undef
+/* eslint-disable no-undef */
 const { EventManager } = ExtensionCommon;
-// eslint-disable-next-line no-undef
 const EventEmitter =
   ExtensionCommon.EventEmitter || ExtensionUtils.EventEmitter;