How to use an empty style in fckstyles.xml?

Hi,

I'd like to use a style that remove the tags, i.e. if I have

<p>text</p>

I like to select it and remove the <p> to obtain

text

I would add om fckstyles.xml

<Style name="Normal" element="" />

But it does nothing

In 2.4.3 I used

<Style name="Normal" element="!-- --" />

And it worked, but in 2.5, that I'm trying, it does not work.

Thanks