Remove custom open introduced by bpo-26789 as we do not need it.
closesodoo/odoo#112453
X-original-commit: 8eaac9744b93e7132827edb2a59c28bb43732ec1
Related: odoo/enterprise#36978
Signed-off-by: Julien Castiaux (juc) <juc@odoo.com>
Co-authored-by: Martin Trigaux <mat@odoo.com>