remove unnecessary catch

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@549258 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/optional/junit/JUnitTask.java

@@ -908,12 +908,7 @@ public class JUnitTask extends Task {
                 Project.MSG_WARN);
         }
 
-        CommandlineJava cmd = null;
-        try {
-            cmd = (CommandlineJava) (getCommandline().clone());
-        } catch (CloneNotSupportedException e) {
-            throw new BuildException("This shouldn't happen", e, getLocation());
-        }
+        CommandlineJava cmd = (CommandlineJava) (getCommandline().clone());
         cmd.setClassname("org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner");
         if (casesFile == null) {
             cmd.createArgument().setValue(test.getName());