Heroku Drop Table Rails Help

I am using Ruby on Rails and I no longer need my table Order so I deleted it using SQLite manager.. How can I make the table deletion take place in heroku?

EDIT I am getting the error

db/migrate/20110806052256_droptableorders.rb:10: syntax error, unexpected keyword_end, expecting $end

When i run the command

class DropTableOrder < ActiveRecord::Migration
  self.up
      drop_table :orders
  end

  self.down
      raise IrreversibleMigration
  end
end