Help with PHP snippet.

add_filter( 'get_terms', 'ts_get_subcategory_terms', 10, 3 );
    function ts_get_subcategory_terms( $terms, $taxonomies, $args ) {
          $new_terms = array();
          // if it is a product category and on the shop page
          if ( in_array( 'product_cat', $taxonomies ) && is_shop() ) {
             foreach ( $terms as $key => $term ) {
                 if ( ! in_array( $term->slug, array( 'category' ) ) ) {        //pass the slug name here
                    $new_terms[] = $term;
                 }
          }
          $terms = $new_terms;
    }
    return $terms;
}

add_action( 'woocommerce_product_query', 'ts_custom_pre_get_posts_query' );
function ts_custom_pre_get_posts_query( $q ) {
    $tax_query = (array) $q->get( 'tax_query' );
    $tax_query[] = array(
           'taxonomy' => 'product_cat',
           'field' => 'slug',
           'terms' => array( 'category'),
           'operator' => 'NOT IN'
    );
    $q->set( 'tax_query', $tax_query );
}