skins2: remove unused function

modules/gui/skins2/utils/var_tree.cpp

@@ -194,18 +194,6 @@ VarTree::Iterator VarTree::prev_uncle()
     return root()->begin();
 }
 
-
-void VarTree::checkParents( VarTree *pParent )
-{
-    m_pParent = pParent;
-    Iterator it = begin();
-    while( it != end() )
-    {
-        it->checkParents( this );
-        it++;
-    }
-}
-
 int VarTree::visibleItems()
 {
     int i_count = size();

modules/gui/skins2/utils/var_tree.hpp

@@ -103,7 +103,6 @@ public:
 
     /// Parent node
     VarTree *parent() { return m_pParent; }
-    void checkParents( VarTree *pParent );
 
     /// Get next sibling
     Iterator getNextSibling( Iterator );

modules/gui/skins2/vars/playtree.cpp

@@ -274,7 +274,5 @@ void Playtree::buildTree()
     buildNode( m_pPlaylist->p_root_category, *this );
 
     playlist_Unlock( m_pPlaylist );
-//  What is it ?
-//    checkParents( NULL );
 }