[session] Kill support for a 'session_open' hook event
To be consistent with dropping of the 'session_close' event, and also because
this is already not called when using pyramid.
.. _auth_module:
:mod:`cubicweb.pyramid.auth`
----------------------------
.. automodule:: cubicweb.pyramid.auth
.. autofunction:: includeme
.. autoclass:: UpdateLoginTimeAuthenticationPolicy
:show-inheritance:
:members: