function upgrade_440() {
  global $wp_current_db_version, $wpdb;

  if ( $wp_current_db_version < 34030 ) {
    $wpdb->query( "ALTER TABLE {$wpdb->options} MODIFY option_name VARCHAR(191)" );
  }

  // Remove the unused 'add_users' role.
  $roles = wp_roles();
  foreach ( $roles->role_objects as $role ) {
    if ( $role->has_cap( 'add_users' ) ) {
      $role->remove_cap( 'add_users' );
    }
  }
}