Remove CWE reference from qlhelp since it's obtained from metadata

Author: atorralba

java/ql/src/Security/CWE/CWE-522/InsecureBasicAuth.qhelp

@@ -15,9 +15,6 @@
   </example>
 
   <references>
-    <li>
-      <a href="https://cwe.mitre.org/data/definitions/522">CWE-522</a>
-    </li>
     <li>
       SonarSource rule:
       <a href="https://rules.sonarsource.com/java/tag/owasp/RSPEC-2647">Basic authentication should not be used</a>