Remove obsolete commented code

Change-Id: Id7f3929407acbaf641ed25db917b37d15f268e1e
Reviewed-by: Jarek Kobus <jaroslaw.kobus@digia.com>

src/plugins/diffeditor/diffeditorcontroller.cpp

@@ -193,13 +193,3 @@ void DiffEditorController::setCurrentDiffFileIndex(int diffFileIndex)
 //{
 //}
 
-//QString DiffEditorWidget::source() const
-//{
-//    return m_source;
-//}
-
-//void DiffEditorWidget::setSource(const QString &source)
-//{
-//    m_source = source;
-//}
-

src/plugins/diffeditor/diffeditorcontroller.h

@@ -38,7 +38,6 @@ namespace DiffEditor {
 
 class DIFFEDITOR_EXPORT DiffEditorController : public QObject
 {
-//    Q_PROPERTY(QString source READ source WRITE setSource)
     Q_OBJECT
 public:
     class DiffFileInfo {
@@ -63,9 +62,6 @@ public:
 
 //    QTextCodec *codec() const;
 
-//    QString source() const;
-//    void setSource(const  QString &source);
-
     QString clearMessage() const;
 
     QList<DiffFilesContents> diffContents() const;