Remove buttons from the WordPress TinyMCE editor

remove-tinymce-editor-buttons.php

<?php
/**
 * Removes buttons from the first row of the tiny mce editor
 *
 */
function remove_first_row_buttons($buttons) {
        $remove = array(
          'bold',
          'italic',
          'bullist',
          'numlist',
          'link',
          'formatselect',
          'blockquote',
          'aligncenter',
          'alignleft',
          'alignright',
          'wp_more',
          'wp_adv',
          'unlink',
          'dfw'
        );
        return array_diff($buttons, $remove);
    }
    add_filter('mce_buttons', 'remove_first_row_buttons');


/**
 * Removes buttons from the second row of the tiny mce editor
 *
 */
function remove_second_row_buttons( $buttons ) {
        $remove = array( 
          'hr',
          'strikethrough',
          'forecolor',
          'sub',
          'sup',
          'wp_help',
          'redo',
          'undo',
          'indent',
          'outdent',
          'charmap',
          'removeformat',
          'pasteword',
          'pastetext',
          'forecolor',
          'justifyfull',
          'underline'
        );

        return array_diff( $buttons, $remove );
    }
    add_filter( 'mce_buttons_2', 'remove_second_row_buttons' );