check against unused imports

checkstyle.xml

@@ -282,6 +282,7 @@
         <module name="VisibilityModifier">
             <property name="protectedAllowed" value="true"/>
         </module>
+        <module name="UnusedImports"/>
 
 <!--        <module name="AbbreviationAsWordInName">
             <property name="ignoreFinal" value="false"/>

converter-CellDesigner/src/test/java/lcsb/mapviewer/converter/model/celldesigner/CellDesignerTestFunctions.java

@@ -64,13 +64,14 @@ import lcsb.mapviewer.model.map.species.SimpleMolecule;
 
 public abstract class CellDesignerTestFunctions {
 
+  protected static Logger logger = LogManager.getLogger();
+  
   private static int BLOCK_SIZE = 65536;
 
   protected static double EPSILON = Configuration.EPSILON;
 
   @Rule
   public UnitTestFailedWatcher unitTestFailedWatcher = new UnitTestFailedWatcher();
-  private Logger logger = LogManager.getLogger();
   private MinervaLoggerAppender appender;
 
   @Before

converter-CellDesigner/src/test/java/lcsb/mapviewer/converter/model/celldesigner/geometry/AbstractCellDesignerAliasConverterTest.java

@@ -2,8 +2,6 @@ package lcsb.mapviewer.converter.model.celldesigner.geometry;
 
 import static org.junit.Assert.assertEquals;
 
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.Mockito;
@@ -18,7 +16,6 @@ import lcsb.mapviewer.model.map.species.Protein;
 import lcsb.mapviewer.model.map.species.Species;
 
 public class AbstractCellDesignerAliasConverterTest extends CellDesignerTestFunctions {
-  private static Logger logger = LogManager.getLogger();
 
   private AbstractCellDesignerAliasConverter<Species> converter;