Replace 3 copies of wxListCtrl mode tests with a single one in wxListCtrlBase.

Move InReportView() and IsVirtual() into the base class as they were the same
in all the implementations.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70281 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/listctrl.h

@@ -160,11 +160,6 @@ class WXDLLIMPEXP_CORE wxListCtrl: public wxListCtrlBase
   // list or report view
   long GetTopItem() const ;
 
-  // are we in report mode?
-  bool InReportView() const { return HasFlag(wxLC_REPORT); }
-
-  bool IsVirtual() const { return HasFlag(wxLC_VIRTUAL); }
-
   // Add or remove a single window style
   void SetSingleStyle(long style, bool add = true) ;