As a quick fix you could add some custom css to the template:
Set overflow: hidden; on the body tag like this:
<style type="text/css">
body {
overflow: hidden;
}
</style>
The code above hides both the horizontal and vertical scrollbar.
If you want to hide only the vertical scrollbar, use overflow-y:
<style type="text/css">
body {
overflow-y: hidden;
}
</style>
And if you want to hide only the horizontal scrollbar, use overflow-x:
<style type="text/css">
body {
overflow-x: hidden;
}
</style>