Remove parentheses from category counts

Adding this snippet to your wordpress template will remove the parentheses surrounding the category count when using wp_list_categories.

<?php
    $variable = wp_list_categories('echo=0&show_count=1&title_li=<h2>Categories</h2>');
    $variable = str_replace(array('(',')'), '', $variable);
    echo $variable;
?>

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