remove unused constants for colors

haas-spim-benchmark/src/main/java/cz/it4i/fiji/haas_spim_benchmark/ui/SPIMPipelineProgressViewController.java

@@ -33,12 +33,6 @@ public class SPIMPipelineProgressViewController extends BorderPane implements Cl
 
 	private static final int PREFERRED_WIDTH = 900;
 	
-	protected static final String RUNNING_STATE_COMPUTATION = Color.YELLOW.toString();
-
-	protected static final String FINISHED_STATE_COMPUTATION = null;
-
-	protected static final String UNKNOWN_STATE_COMPUTATION = Color.GRAY.toString();
-
 	private static final Map<JobState, Color> taskExecutionState2Color = new HashMap<>();
 	static {
 		taskExecutionState2Color.put(JobState.Running, Color.YELLOW);