Wizard: Never attempt to hide server page

The wizard code used to call hide() on hardcoded wizards.
This means that for a brief moment, the first page with the URL
(disabled line edit) may be seen. I think that's completely
legitimate from a feedback perspective. The alternative would
be to unhide on error, but this is rather unelegant...

src/gui/wizard/owncloudsetuppage.cpp

@@ -154,9 +154,6 @@ void OwncloudSetupPage::initializePage()
         setButtonText(QWizard::CommitButton, tr("&Next >"));
         validatePage();
         setVisible(false);
-        // because the wizard will call show on us right after this call, we need to hide in the
-        // next event loop iteration.
-        QTimer::singleShot(0, this, SLOT(hide()));
     }
 }