una/modules/boonex/drupal_connect/install/sql/uninstall.sql

DROP TABLE IF EXISTS `bx_drupal_accounts`;

-- Forms
DELETE FROM `sys_objects_form` WHERE `module` = 'bx_drupal';
DELETE FROM `sys_form_displays` WHERE `module` = 'bx_drupal';
DELETE FROM `sys_form_inputs` WHERE `module` = 'bx_drupal';
DELETE FROM `sys_form_display_inputs` WHERE `display_name` = 'bx_drupal_login';

-- Studio page and widget
DELETE FROM `tp`, `tw`, `twb`, `tpw` 
USING `sys_std_pages` AS `tp` LEFT JOIN `sys_std_widgets` AS `tw` ON `tp`.`id` = `tw`.`page_id` LEFT JOIN `sys_std_widgets_bookmarks` AS `twb` ON `tw`.`id` = `twb`.`widget_id` LEFT JOIN `sys_std_pages_widgets` AS `tpw` ON `tw`.`id` = `tpw`.`widget_id`
WHERE  `tp`.`name` = 'bx_drupal';