code: public void removeELContextListener(ELContextListener listener)
      {
          Application application = getMyfacesApplicationInstance();
          if (application != null)
          {
              application.removeELContextListener(listener);
              return;
          }
          throw new UnsupportedOperationException();
      }
docs: <p>
  Remove the argument <code>listener</code> from the list of <code>ELContextListeners</code>. If <code>listener
  </code> is null, no exception is thrown and no action is performed. If <code>listener</code> is not in the list,
  no exception is thrown and no action is performed.
  <p>
  
  <p>
  An implementation is provided that throws <code>UnsupportedOperationException</code> so that users that decorate
  the <code>Application</code> continue to work.
  
  @param listener