wxUniv: implement wxSYS_VSCROLL_X/Y metrics in wxUniv code, they depend on the theme, not lowlovel port

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53616 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/dfb/settings.cpp

@@ -77,13 +77,6 @@ int wxSystemSettingsNative::GetMetric(wxSystemMetric index,
             wxDisplaySize(NULL, &val);
             return val;
 
-#warning "FIXME this"
-#if 0
-        case wxSYS_VSCROLL_X:
-        case wxSYS_HSCROLL_Y:
-            return 15;
-#endif
-
         default:
             wxFAIL_MSG( "unsupported metric" );
             return -1;