class DropDelayedJobTables < ActiveRecord::Migration
  def change
    drop_table :delayed_jobs
  end
end

$ psql myapp_production
myapp_production=# dt
 Schema |       Name        | Type  |   Owner
--------+-------------------+-------+-----------
 public | delayed_jobs      | table | leoebrown
 public | foods             | table | leoebrown
 public | lists             | table | leoebrown
 public | quantities        | table | leoebrown
 public | schema_migrations | table | leoebrown
 public | users             | table | leoebrown

myapp_production=# SELECT COUNT(*) from FOODS;
 count
-------
  6716
(1 row)

$heroku run console
irb(main):001:0> Food.count
=> 6161

development:

  host: localhost
  adapter: postgresql
  encoding: UTF8
  pool: 5
  username: <%= ENV['USERNAME'] %>
  password: <%= ENV['PASSWORD'] %>
  database: myapp_development

test:
  host: localhost
  adapter: postgresql
  encoding: UTF8
  pool: 5
  username: <%= ENV['USERNAME'] %>
  password: <%= ENV['PASSWORD'] %>
  database: myapp_test

production:
  host: <%= ENV['IP'] %>
  adapter: postgresql
  encoding: UTF8
  pool: 5
  username: <%= ENV['USERNAME'] %>
  password: <%= ENV['PASSWORD'] %>
  database: myapp_production