The last view in the odoo codebase has just been converted to owl, meaning that we no longer have legacy views. This allows us to remove a lot of legacy view related code: the abstract elements on which the legacy views were built, the compatibility layers that allowed to deal with both owl and legacy views uniformly, legacy widgets that were only used in those legacy views... closes odoo/odoo#114893 Related: odoo/upgrade#4420 Related: odoo/enterprise#38005 Signed-off-by: Géry Debongnie <ged@odoo.com>