When I delete a Page database via ACP, then the table for the records is just dropped:

		/* Delete records */
		\IPS\Db::i()->dropTable( 'cms_custom_database_' . $this->id, TRUE );

There is no handling for record images stored in the record_image column. The files are never deleted and are orphaned in /uploads forever. 

Thanks, I've raised this internally to have it checked on for a future release.