QmlProfiler: Remove pointless struct

Change-Id: I9a67048ba5c4dfc238c9f8456601922c4528a53c
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

src/plugins/qmlprofiler/qmlprofilerpainteventsmodelproxy.cpp

@@ -45,12 +45,6 @@
 namespace QmlProfiler {
 namespace Internal {
 
-struct CategorySpan {
-    bool expanded;
-    int expandedRows;
-    int contractedRows;
-};
-
 class PaintEventsModelProxy::PaintEventsModelProxyPrivate :
         public SortedTimelineModel<QmlPaintEventData,
                                    SingleCategoryTimelineModel::SingleCategoryTimelineModelPrivate>