WordPress - Nav - Remove injected list item attributes

wordpress-nav-remove-li-attr

/**
 * Themify menu links
 *
 * - Trim injected classes
 */
function theme_nav_link( $classes, $item ) {

    // Tidy up li classes
    if ( ( $key = array_search( 'menu-item-type-post_type', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'menu-item-type-custom', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'menu-item-object-page', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'menu-item-object-custom', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'menu-item-home', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'current_page_item', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'current-menu-item', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'page_item', $classes ) ) !== false ) { unset($classes[$key]); }
    if ( ( $key = array_search( 'page-item-46', $classes ) ) !== false ) { unset($classes[$key]); }
       
    foreach ( $classes as $k=>$v ) {
        if ( preg_match( '/page-item-(\d+)$/', $v ) ) { unset($classes[$k]); }
        if ( preg_match( '/menu-item-(\d+)$/', $v ) ) { unset($classes[$k]); }
        if ( preg_match( '/nav-item-(\d+)$/', $v ) ) { unset($classes[$k]); }
    }
     return $classes;
}

add_filter( 'nav_menu_css_class', 'theme_nav_link', 10, 2 );