Fix junitlauncher doc to be clear that the classpath element isn't used for looking test engines or junit launcher APIs

manual/Tasks/junitlauncher.html

@@ -150,13 +150,10 @@
 </p>
 <ul>
     <li>Finding the test classes to execute</li>
-    <li>Finding the JUnit 5 framework libraries (which include the API jars and test engine
-        jars). The complete set of jars that are relevant in JUnit 5 framework are listed in
-        the <a href="#junit5deps">dependencies</a> section</li>
 </ul>
 <p>
     If the <code>classpath</code> element isn't configured for the task, then the classpath of Ant
-    itself will be used for finding the test classes and JUnit 5 libraries.
+    itself will be used for finding the test classes.
 </p>
 
 <h4>listener</h4>