[FIX] models: make log_access fields readonly, and remove useless definitions

addons/bus/models/bus.py

addons/crm/models/crm_lead.py

addons/gamification/models/badge.py

addons/hr_recruitment/models/hr_recruitment.py

addons/im_livechat/models/mail_channel.py

addons/mass_mailing/models/mass_mailing.py

addons/point_of_sale/models/pos_order.py

addons/project/models/project.py

addons/stock/models/stock_production_lot.py

addons/website_crm_partner_assign/report/crm_lead_report.py

addons/website_forum/models/forum.py

addons/website_forum/models/res_users.py

addons/website_sale_wishlist/models/product_wishlist.py

odoo/addons/base/models/ir_attachment.py

odoo/addons/base/models/ir_ui_view.py

odoo/models.py