remove error imports

SVN: 18936

screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/client/api/v1/ScreeningClientApiTester.java

@@ -39,7 +39,6 @@ import javax.swing.JComboBox;
 import javax.swing.JComponent;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
-import javax.swing.JList;
 import javax.swing.JMenu;
 import javax.swing.JMenuBar;
 import javax.swing.JMenuItem;
@@ -48,7 +47,6 @@ import javax.swing.JPanel;
 import javax.swing.JPasswordField;
 import javax.swing.JScrollPane;
 import javax.swing.JTextField;
-import javax.swing.ListCellRenderer;
 import javax.swing.text.JTextComponent;
 
 import org.apache.log4j.PropertyConfigurator;