Gettting rid of version attribute in roo-generated tiles

In the tiles pages that Roo generates there is a version attribute that stays after being processed, so that in this div element for instance:

Code:

---

<div id="header" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:fn="http://java.sun.com/jsp/jstl/functions" xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:spring="http://www.springframework.org/tags" version="2.0">

---

becomes this final element that is output to the resulting page:

Code:

---

<div id="header" version="2.0">

---

I don't care for this versioning as it doesn't have a function in the html page. As far as I can tell it belongs to spring tags and shouldn't stay in the final output.

How do I get rid of it?