When #114353 forward port of #112425 which adds an uninstall_hook was
merged, it was not updated with the API change of #108254, which
replaced the `(cr, registry)` parameters by a sole `(env)` as most if
not all uninstall hooks immediately created an environment anyway.
So this hook has been breaking uninstall on anything on which
`website_slides_survey` depends since it was merged.
Fix the hook to match the new API.
closesodoo/odoo#118296
X-original-commit: 201a4b369cf1652a2da763181f6837cfb7f44f3e
Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>