Removed unnecessary import statement (breaks under Java 6).

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@208 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/userinterface/simulator/GUITimeDialog.java

@@ -33,8 +33,6 @@ import javax.swing.event.DocumentEvent;
 import javax.swing.event.DocumentListener;
 import javax.swing.table.*;
 
-import com.sun.org.apache.xerces.internal.dom3.as.DocumentAS;
-
 import java.util.*;
 import java.awt.event.*;