Removing custom pagination and using jetpack infinite scroll

I’m having a couple problems, I’ve followed the Jetpack Infinite scroll instructions for custom themes and still it doesn’t work!

I’ve found a pagination.php in theme/framework/functions/pagination.php and i don’t know if this is taking over or making it not work can someone please pretty please?

This is the pagination code

<?php
//custom pagination function
function pagination($pages = '', $range = 4) {
     $showitems = ($range * 2)+1;
     global $paged;
     if(empty($paged)) $paged = 1;

     if($pages == '') {
         global $wp_query;
         $pages = $wp_query->max_num_pages;
         if(!$pages) {
             $pages = 1;
         }
     }  

     if(1 != $pages) {
         echo "<div class=\"page-pagination\"><div class=\"page-pagination-inner clearfix\">";
		 echo "<div class=\"page-of-page\"><span class=\"inner\">".$paged." of ".$pages."</span></div>";
         for ($i=1; $i <= $pages; $i++) {
             if (1 != $pages &&( !($i >= $paged+$range+1 || $i <= $paged-$range-1) || $pages <= $showitems ))
             {
                 echo ($paged == $i)? "<span class=\"current outer\"><span class=\"inner\">".$i."</span></span>":"<a href='".get_pagenum_link($i)."' class=\"inactive\"><span class=\"inner\">".$i."</span></a>";
             }
         }
          echo "</div></div>\n";
     }
} // end pagination()
?>

should i delete it with the function to get infinite scroll working?