removed wxABI_TESTS, they're irrelvant in 2.9

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44333 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/treectrl.h

@@ -172,10 +172,8 @@ public:
     virtual bool IsSelected(const wxTreeItemId& item) const = 0;
         // is item text in bold font?
     virtual bool IsBold(const wxTreeItemId& item) const = 0;
-#if wxABI_VERSION >= 20801
         // is the control empty?
     bool IsEmpty() const;
-#endif // wxABI 2.8.1+
 
 
     // number of children
@@ -298,12 +296,10 @@ public:
     void ExpandAll();
         // collapse the item without removing its children
     virtual void Collapse(const wxTreeItemId& item) = 0;
-#if wxABI_VERSION >= 20801
         // collapse the item and all its childs and thats childs
     void CollapseAllChildren(const wxTreeItemId& item);
         // collapse all items
     void CollapseAll();
-#endif // wxABI 2.8.1+
         // collapse the item and remove all children
     virtual void CollapseAndReset(const wxTreeItemId& item) = 0;
         // toggles the current state