--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/DifferenceCurveFilterFacet.java	Wed Apr 30 17:16:57 2014 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/DifferenceCurveFilterFacet.java	Wed Apr 30 17:23:28 2014 +0200
@@ -1,11 +1,9 @@
 package org.dive4elements.river.artifacts.model;
 
-import org.apache.log4j.Logger;
 import org.dive4elements.artifactdatabase.state.Facet;
 import org.dive4elements.artifacts.Artifact;
 import org.dive4elements.artifacts.CallContext;
 import org.dive4elements.river.artifacts.D4EArtifact;
-import org.dive4elements.river.artifacts.WINFOArtifact;
 import org.dive4elements.river.artifacts.access.RiverAccess;
 import org.dive4elements.river.artifacts.context.RiverContext;
 import org.dive4elements.river.artifacts.math.MovingAverage;
@@ -15,9 +13,6 @@
 public class DifferenceCurveFilterFacet
 extends DifferenceCurveFacet
 {
-    private static Logger logger = Logger.getLogger(DifferenceCurveFacet.class);
-
-
     public DifferenceCurveFilterFacet() {
     }