QmlDesigner: Remove styling of warning text

Task-number: QTCREATORBUG-9603
Change-Id: I5028e955bec47e7d9799e6a7a98fa96398d44684
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

src/plugins/qmldesigner/designercore/filemanager/qmlwarningdialog.cpp

@@ -30,10 +30,6 @@ QmlWarningDialog::QmlWarningDialog(QWidget *parent, const QStringList &warnings)
     foreach (const QString &string, warnings)
         warningText += QLatin1String(" ") + string + QLatin1String("\n");
     ui->warnings->setText(warningText);
-
-    ui->warnings->setForegroundRole(QPalette::ToolTipText);
-    ui->warnings->setBackgroundRole(QPalette::ToolTipBase);
-    ui->warnings->setAutoFillBackground(true);
 }
 
 QmlWarningDialog::~QmlWarningDialog()