Remove last vestige of "ManualReview" model type.

One processing-profile deleted:
genome=> SELECT * FROM model.processing_profile WHERE subclass_name =
'Genome::ProcessingProfile::ManualReview';
   id    |   type_name   |     name      |              subclass_name
---------+---------------+---------------+-----------------------------------------
 1984223 | manual review | Manual Review |
Genome::ProcessingProfile::ManualReview
(1 row)

genome=> SELECT * FROM model.processing_profile_param WHERE
processing_profile_id = '1984223';
 processing_profile_id | param_name | param_value | name |
value_class_name | value_id
-----------------------+------------+-------------+------+------------------+----------
(0 rows)
Remove vestige of "Composite" model type.