[gnome-shell-extensions] screenshot-window-sizer: Fix imports

[Florian Müllner <fmuellner src gnome org>]

commit 6aab09bd06a5b960f0fa6e0f83dc771bd42f2a28
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Aug 10 14:39:38 2019 +0200

    screenshot-window-sizer: Fix imports
    
    Since we replaced Tweener with Clutter animations, we must import the
    latter and don't need the former.
    
    https://gitlab.gnome.org/GNOME/gnome-shell-extensions/merge_requests/88

 extensions/screenshot-window-sizer/extension.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/extensions/screenshot-window-sizer/extension.js b/extensions/screenshot-window-sizer/extension.js
index 44bad8e..0f87b36 100644
--- a/extensions/screenshot-window-sizer/extension.js
+++ b/extensions/screenshot-window-sizer/extension.js
@@ -19,11 +19,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
-const { Meta, Shell, St } = imports.gi;
+const { Clutter, Meta, Shell, St } = imports.gi;
 
 const ExtensionUtils = imports.misc.extensionUtils;
 const Main = imports.ui.main;
-const Tweener = imports.ui.tweener;
 
 const MESSAGE_FADE_TIME = 2000;