How to update Odoo Custom Module's Model
I had a little experience with odoo 8, as I know once you add a field to a model you can't simply remove it, because it passes throught the ORM to the SGBD, so if you remove it from the model it will remain in the table of the database. maybe you can try to remove the table from the data base and re execute your code (I used to do that on a test database I DON'T recommend to do so on a database with real data). If it doesn't work, I think you should create a new database, and install your module after you make your changes on the model.
I have a custom module with a model installed, i want to update the module as i have made change in design of the module. Is there anyway to update the model structure like removing or deleting field in the model in ODOO v10.