title: Deleting the columns from the typeorm entities
body: <p>I am pretty new to the NestJS/typeorm system. So while working, I created an <code>Episode</code> entity and added some fields. Then I updated the entity to remove and update some fields. But after running the application, it still has the deleted columns ( checked it on pgAdmin ). The migrations are not updated to delete the columns. Is there any way to do it?</p>