remove redundant code

Author: theibhir

tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/internal/tmf/core/statesystem/provider/StateSystemDataProvider.java

@@ -53,7 +53,6 @@
 import org.eclipse.tracecompass.tmf.core.model.timegraph.TimeGraphModel;
 import org.eclipse.tracecompass.tmf.core.model.timegraph.TimeGraphRowModel;
 import org.eclipse.tracecompass.tmf.core.model.timegraph.TimeGraphState;
-import org.eclipse.tracecompass.tmf.core.model.tree.ITmfTreeDataModel;
 import org.eclipse.tracecompass.tmf.core.model.tree.TmfTreeModel;
 import org.eclipse.tracecompass.tmf.core.presentation.IPaletteProvider;
 import org.eclipse.tracecompass.tmf.core.presentation.RGBAColor;
@@ -149,20 +148,17 @@ public class StateSystemDataProvider extends AbstractTmfTraceDataProvider implem
     }
 
     private static final Comparator<ITimeGraphEntryModel> NAME_COMPARATOR = (a, b) -> {
-        if (a instanceof TimeGraphEntryModel && b instanceof TimeGraphEntryModel) {
-            ITmfTreeDataModel aModel = a;
-            ITmfTreeDataModel bModel = b;
-            if (aModel instanceof TraceEntryModel && bModel instanceof TraceEntryModel) {
-                ITmfTrace ta = ((TraceEntryModel) aModel).getTrace();
-                ITmfTrace tb = ((TraceEntryModel) bModel).getTrace();
+            if (a instanceof TraceEntryModel && b instanceof TraceEntryModel) {
+                ITmfTrace ta = ((TraceEntryModel) a).getTrace();
+                ITmfTrace tb = ((TraceEntryModel) b).getTrace();
                 // Puts the experiment entries at the top of the list
                 if (ta instanceof TmfExperiment && !(tb instanceof TmfExperiment)) {
                     return -1;
                 } else if (!(ta instanceof TmfExperiment) && (tb instanceof TmfExperiment)) {
                     return 1;
                 }
             }
-        }
+
         try {
             return Long.compare(Long.parseLong(a.getName()), Long.parseLong(b.getName()));
         } catch (NumberFormatException e) {