Remove all html tag of contact form 7 output

Hello.
I hope you be fine.
Is there a way for disable contact form 7 output to generate html tags ?
For example when you create a form and insert a radio button on it, after publish to site, Input tag is between Span tag :

<span class="wpcf7-form-control-wrap priority">
<span class="wpcf7-form-control wpcf7-radio color2" id="demo-priority-low">
<span class="wpcf7-list-item first last">
<input name="priority" value="Low" type="radio">
<span class="wpcf7-list-item-label">Low</span>
</span>
</span>
</span>

This Span tags make problem for some themes .
Do you have idea for remove those ?
Many thanks.