[gnome-boxes] Remove exclamation mark from error messages

[Christophe Fergeau <teuf src gnome org>]

commit 67487d837242b1c9dac0d6317e9858c290776c3b
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Mon Jul 9 19:54:34 2012 +0200

    Remove exclamation mark from error messages
    
    They are not needed, and such marks in messages are generally not
    recommended.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=679645

 src/wizard.vala |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/wizard.vala b/src/wizard.vala
index 785ca0d..03822de 100644
--- a/src/wizard.vala
+++ b/src/wizard.vala
@@ -89,7 +89,7 @@ private class Boxes.Wizard: Boxes.UI {
                     if (create ())
                        App.app.ui_state = UIState.COLLECTION;
                     else
-                       App.app.notificationbar.display_error (_("Box creation failed!"));
+                       App.app.notificationbar.display_error (_("Box creation failed"));
                     return;
                 }
             } else {
@@ -317,7 +317,7 @@ private class Boxes.Wizard: Boxes.UI {
             } catch (IOError.CANCELLED cancel_error) { // We did this, so ignore!
                 return false;
             } catch (GLib.Error error) {
-                App.app.notificationbar.display_error (_("Box setup failed!"));
+                App.app.notificationbar.display_error (_("Box setup failed"));
                 warning (error.message);
 
                 return false;