[FIX] ir_model: Don't prefetch unnecessary fields
[FIX] ir_model: Don't prefetch unnecessary fields

Do not prefetch unnecessary fields during the uninstallation of modules.

Previous to this commit, prefetching of unnecessary fields would cause server crashes
on some modules that add a field on ir_model_fields.
i.e. website_form

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo