Remove part of html plugin

Hello,

I have a website: https://www.houseoflooks.nl

I downloaded a plugin: Salon Booking WordPress Plugin – Free version

I have placed this on this page through a shortcode: https://www.houselics.nl/booking/

Now I want to remove a piece of html here, namely:

<div class = “col-xs-12”>

<div class = “row sln-steps-description sln-service-description”>

<div class = “col-xs-12”>

<p> </p>

<! – .sln-service-info // END ->

</div>

</div>

</div>

I just can’t figure out where to do this. I have looked in the css, the plugin editor and the file manager of my hosting (Vimexx).

Can someone maybe tell me where I can do this?

Greetings Nicole.

The page I need help with: [log in to see the link]