code: public void removeCFX(String name) throws ExpressionException, SecurityException {
  	checkWriteAccess();
  	// check parameters
  	if (name == null || name.length() == 0) throw new ExpressionException("name for CFX Tag can be a empty value");
  
  	renameOldstyleCFX();
  
  	Element mappings = _getRootElement("ext-tags");
  
  	Element[] children = XMLConfigWebFactory.getChildren(mappings, "ext-tag");
  	for (int i = 0; i < children.length; i++) {
  	    String n = children[i].getAttribute("name");
  	    if (n != null && n.equalsIgnoreCase(name)) {
  		mappings.removeChild(children[i]);
  	    }
  	}
      }
docs: remove a CFX Tag
  
  @param name
  @throws ExpressionException
  @throws SecurityException