#4323 Make sure time step legend doesn't show up unexpectedly

* Don't make it the default. The legend is handled well when changing to time step

ApplicationCode/ProjectDataModel/GridCrossPlots/RimGridCrossPlotDataSet.cpp

@@ -73,7 +73,7 @@ void RimGridCrossPlotDataSet::CurveGroupingEnum::setUp()
     addItem(RigGridCrossPlotCurveGrouping::GROUP_BY_TIME, "TIME", "Time Step");
     addItem(RigGridCrossPlotCurveGrouping::GROUP_BY_FORMATION, "FORMATION", "Formations");
     addItem(RigGridCrossPlotCurveGrouping::GROUP_BY_RESULT, "RESULT", "Result Property");
-    setDefault(RigGridCrossPlotCurveGrouping::GROUP_BY_TIME);
+    setDefault(RigGridCrossPlotCurveGrouping::NO_GROUPING);
 }
 } // namespace caf