image: Remove attribute that is never initialised

At the moment it's never initialised, so it would work poorly at best.

wallpapers/image/image.cpp

@@ -670,12 +670,6 @@ void Image::backgroundsFound()
 {
     disconnect(m_slideshowModel, &SlideModel::done, this, 0);
 
-    if (m_scanDirty) {
-        m_scanDirty = false;
-        startSlideshow();
-        return;
-    }
-
     // start slideshow
     if (m_slideFilterModel->rowCount() == 0) {
         // no image has been found, which is quite weird... try again later (this is useful for events which

wallpapers/image/image.h

@@ -172,7 +172,6 @@ private:
     QString m_wallpaperPath;
     QStringList m_usersWallpapers;
     KDirWatch *m_dirWatch;
-    bool m_scanDirty;
     QSize m_targetSize;
 
     RenderingMode m_mode;