remove WXWIN_COMPATIBILITY_2_6, add WXWIN_COMPATIBILITY_3_0

closes #15792

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75532 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/filefn.cpp

@@ -226,13 +226,6 @@ bool wxPathList::EnsureFileAccessible (const wxString& path)
     return Add(wxPathOnly(path));
 }
 
-#if WXWIN_COMPATIBILITY_2_6
-bool wxPathList::Member (const wxString& path) const
-{
-    return Index(path) != wxNOT_FOUND;
-}
-#endif
-
 wxString wxPathList::FindValidPath (const wxString& file) const
 {
     // normalize the given string as it could be a path + a filename
@@ -1502,13 +1495,6 @@ wxChar *wxDoGetCwd(wxChar *buf, int sz)
     // __WXWINCE__
 }
 
-#if WXWIN_COMPATIBILITY_2_6
-wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
-{
-    return wxDoGetCwd(buf,sz);
-}
-#endif // WXWIN_COMPATIBILITY_2_6
-
 wxString wxGetCwd()
 {
     wxString str;