In our continued effort to remove legacy code, this commit replaces usage of the legacy DropMisordered util with the KeepLast util. The legacy DropMisordered has been removed. Part-of task-id 3439226 closes odoo/odoo#132559 Related: odoo/enterprise#46027 Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>