Delete all user’s meta without knowing all the ‘key’

No need to find and delete user meta explicitly, because when you remove a WordPress user using wp_delete_user(), it deletes user and, Posts and all meta is also be deleted that are for that User ID..

Documentation

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)