[FIX] uninstall: models no longer in the pool
[FIX] uninstall: models no longer in the pool

When attempting to uninstall a module
for which models are no longer in the pool
(the module is no longer is the addons path /
no longer in the current release),

- This isn't possible to drop the constraints,
  as this is no longer possible to know the table
  of the model.
- This is no longer possible to check if the
  model log the accesses (`_log_access`), as
  the model is no longer loaded in the pool.

opw-669130

ygol/odoo,storm-computers/odoo,bplancher/odoo,microcom/odoo,hip-odoo/odoo,stephen144/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,storm-computers/odoo,laslabs/odoo,storm-computers/odoo,hip-odoo/odoo,laslabs/odoo,ygol/odoo,laslabs/odoo,ygol/odoo,sysadminmatmoz/OCB,laslabs/odoo,storm-computers/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,dfang/odoo,microcom/odoo,dfang/odoo,Elico-Corp/odoo_OCB,stephen144/odoo,ygol/odoo,dfang/odoo,microcom/odoo,Elico-Corp/odoo_OCB,stephen144/odoo,microcom/odoo,microcom/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,sysadminmatmoz/OCB,dfang/odoo,dfang/odoo,dfang/odoo,laslabs/odoo,storm-computers/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,stephen144/odoo,laslabs/odoo,microcom/odoo,bplancher/odoo,ygol/odoo,sysadminmatmoz/OCB,stephen144/odoo,ygol/odoo,storm-computers/odoo,bplancher/odoo,ygol/odoo,Elico-Corp/odoo_OCB,bplancher/odoo,stephen144/odoo,bplancher/odoo,hip-odoo/odoo,bplancher/odoo