remove unused import. does not impact functionality.

git-svn-id: http://svn.dmdirc.com/trunk@4585 00569f92-eb28-0410-84fd-f71c24880f

src/com/dmdirc/ui/swing/dialogs/actioneditor/ActionEditorDialog.java

@@ -36,8 +36,6 @@ import java.beans.PropertyChangeListener;
 
 import javax.swing.JButton;
 
-
-import javax.swing.plaf.DimensionUIResource;
 import net.miginfocom.swing.MigLayout;
 
 /**