remove unused varaible

src/main/java/observer/RecordDuoChart.java

@@ -54,7 +54,6 @@ public class RecordDuoChart extends XYSeriesChart {
 
 	protected transient ObservablesHandler.ObservableFetcher fetcher;
 
-
 	public RecordDuoChart() {
 		super();
 	}
@@ -104,7 +103,7 @@ public class RecordDuoChart extends XYSeriesChart {
 		double valueX;
 		double valueY;
 
-		Object objectValue;
+		// Object objectValue;
 		try {
 
 			List<ObservableRecord> records = (List<ObservableRecord>) fetcher.fetchValue(instance);