Remove un-needed import (breaks some compilers).

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@4570 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/userinterface/model/GUIMultiModelHandler.java

@@ -30,8 +30,6 @@ package userinterface.model;
 import javax.swing.*;
 import javax.swing.border.*;
 
-import com.sun.tools.internal.ws.wsdl.document.jaxws.Exception;
-
 import java.awt.*;
 import java.io.*;
 import parser.*;