<?php

                    $taxonomy     = 'category';
                    $orderby      = 'name';
                    $show_count   = 0;
                    $pad_counts   = 0;
                    $hierarchical = 1;
                    $title        = '';
                    $empty        = 0;

                    $args = array(
                            'taxonomy'     => $taxonomy,
                            'orderby'      => $orderby,
                            'show_count'   => $show_count,
                            'pad_counts'   => $pad_counts,
                            'hierarchical' => $hierarchical,
                            'title_li'     => $title,
                            'hide_empty'   => $empty
                    );
                    $all_categories = get_categories( $args );



                        foreach ($all_categories as $cat) {
                            if($cat->category_parent == 0) {
                                $category_id = $cat->term_id;


                                    ?>
                                    <?php if( $cat->slug != 'sem-categoria' ): ?>

                                        <?php echo $cat->name; ?>

                                    <?php
                                    endif;

                            }
                        }

                ?>