[gnome-shell] Remove incorrect parameter

[Florian Müllner <fmuellner src gnome org>]

commit 8da5c5f50e9cae5631bde82c659a4a76990ecfe2
Author: Florian Müllner <fmuellner gnome org>
Date:   Sun Jun 6 21:30:34 2010 +0200

    Remove incorrect parameter
    
    Commit 730681aabc5 calls ClutterActor.hide() with a parameter, which
    is wrong, but managed to sneak in when rebasing.

 js/ui/overview.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/overview.js b/js/ui/overview.js
index a0796a8..228031c 100644
--- a/js/ui/overview.js
+++ b/js/ui/overview.js
@@ -383,7 +383,7 @@ Overview.prototype = {
                 }
                 this._transparentBackground.lower_bottom();
                 this._paneContainer.hide();
-                this._lightbox.actor.hide(true);
+                this._lightbox.actor.hide();
             }
         }));
     },