Remove changeEvent(QEvent::LanguageChange) implementation

This was implemented only for a small set of widgets. It's unlikely that
we will ever have or even want a dynamic language selection, until then
this code is only dead freight.

Change-Id: I1bff4e1e89057786c0e5cb57225a508c5d390d9c
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/vcsbase/submiteditorwidget.cpp

@@ -517,18 +517,6 @@ QString SubmitEditorWidget::cleanupDescription(const QString &input) const
     return input;
 }
 
-void SubmitEditorWidget::changeEvent(QEvent *e)
-{
-    QWidget::changeEvent(e);
-    switch (e->type()) {
-    case QEvent::LanguageChange:
-        d->m_ui.retranslateUi(this);
-        break;
-    default:
-        break;
-    }
-}
-
 void SubmitEditorWidget::insertTopWidget(QWidget *w)
 {
     d->m_ui.vboxLayout->insertWidget(0, w);