You'll have to do this manually.
i.e., create an eloquent model for each of the tables you want access to in your code using eloquent.
If you don't have timestamps named created_at and updated_at, in your model you can disable those columns.
Manually
If you have a users table you could 'map' it with a user.php
file in your models folder like this
class User extends Eloquent {
protected $table = 'users';
public $timestamps = false;
}
Via artisan
You can use Jeffrey Ways Laravel Generators to help streamline the initial creation of your models, however you'll still need to make the timestamp modification manually.