How to remove Rel canonical for pagination pages?

Question

Prestashop

Who can tell me how to remove rel canonical for 2,3, n, n, ... category pages,
Prestashop 1.4.9.0
Now I use this code

{if $page_name == index}
<link rel="canonical" href="{$base_dir}" />
{elseif $page_name == product}
<link rel="canonical" href="{$base_dir}{$request_uri}" />
{else}
<link rel="canonical"
href="{$base_dir}{$request_uri|substr:1|regex_replace:'/\/(.*)/':''|regex_replace:'/\?(.*)/':''}" />
{/if}

But it works for any page. And you need a relay only for the 1st page of the category .. In general, a thing that many people need, help out who can)