[chrome-gnome-shell] update-check: clean up.

[Yuri Konotopov <ykonotopov src gnome org>]

commit 3db960aeed06276c97e1cac6ae06fd442bfdd6b0
Author: Yuri Konotopov <ykonotopov gnome org>
Date:   Mon Jun 12 21:30:59 2017 +0400

    update-check: clean up.

 extension/include/update.js |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/extension/include/update.js b/extension/include/update.js
index 04c00ca..82657d6 100644
--- a/extension/include/update.js
+++ b/extension/include/update.js
@@ -30,9 +30,6 @@ GSC.update = (function($) {
                GSC.onInitialize().then(response => {
                        if (response.success)
                        {
-                               var shellVersion = response.properties.shellVersion;
-
-                               // TODO: remove deprecated in version 9
                                if(GSC.nativeUpdateCheckSupported(response))
                                {
                                        chrome.storage.sync.get(DEFAULT_SYNC_OPTIONS, function (options) {