Removing unused imports

src/main/lombok/org/leumasjaffe/charsheet/view/D20Sheet.java

@@ -1,7 +1,6 @@
 package org.leumasjaffe.charsheet.view;
 
 import static org.leumasjaffe.charsheet.config.Constants.K_LEVELUP;
-import static org.leumasjaffe.charsheet.config.Constants.LevelUpStyle.DURING_REST;
 import static org.leumasjaffe.charsheet.config.Constants.LevelUpStyle.IMMEDIATELY;
 
 import java.awt.BorderLayout;
@@ -17,7 +16,6 @@ import javax.swing.JFrame;
 import javax.swing.JMenu;
 import javax.swing.JMenuBar;
 import javax.swing.JMenuItem;
-import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JTabbedPane;
 import javax.swing.KeyStroke;
@@ -26,10 +24,8 @@ import javax.swing.UIManager;
 import org.leumasjaffe.charsheet.config.Config;
 import org.leumasjaffe.charsheet.model.DDCharacter;
 import org.leumasjaffe.charsheet.model.DDCharacterClass;
-import org.leumasjaffe.charsheet.model.observable.IntValue;
 import org.leumasjaffe.charsheet.observer.ObserverHelper;
 import org.leumasjaffe.charsheet.view.level.ExperienceDialog;
-import org.leumasjaffe.observer.ObserverDispatch;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;